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Finding the Fourth Proportional to 1,130.25, 1,559.66 and 632.86

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Solution

The fourth proportional to 1,130.25, 1,559.66 and 632.86 is: 873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.25 : 1,559.66 = 632.86 : x
  2. Step 2: Convert to fraction form
    1,130.25/1,559.66 = 632.86/x
  3. Step 3: Cross multiply
    1,130.25x = 1,559.66 × 632.86
  4. Step 4: Simplify right side
    1,130.25x = 987,048.14
  5. Step 5: Solve for x
    x = 987,048.14/1,130.25
  6. Step 6: Final answer
    x = 873.30

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Double 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.