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Finding the Fourth Proportional to 1,179.69, 1,626.37 and 825.13

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Solution

The fourth proportional to 1,179.69, 1,626.37 and 825.13 is: 1,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.69 : 1,626.37 = 825.13 : x
  2. Step 2: Convert to fraction form
    1,179.69/1,626.37 = 825.13/x
  3. Step 3: Cross multiply
    1,179.69x = 1,626.37 × 825.13
  4. Step 4: Simplify right side
    1,179.69x = 1,341,966.68
  5. Step 5: Solve for x
    x = 1,341,966.68/1,179.69
  6. Step 6: Final answer
    x = 1,137.56

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.