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Finding the Fourth Proportional to 1,133.05, 1,563.59 and 635.69

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Solution

The fourth proportional to 1,133.05, 1,563.59 and 635.69 is: 877.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.05 : 1,563.59 = 635.69 : x
  2. Step 2: Convert to fraction form
    1,133.05/1,563.59 = 635.69/x
  3. Step 3: Cross multiply
    1,133.05x = 1,563.59 × 635.69
  4. Step 4: Simplify right side
    1,133.05x = 993,958.53
  5. Step 5: Solve for x
    x = 993,958.53/1,133.05
  6. Step 6: Final answer
    x = 877.24

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Half scale
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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.