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Finding the Fourth Proportional to 938.19, 1,294.69 and 560.34

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Solution

The fourth proportional to 938.19, 1,294.69 and 560.34 is: 773.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.19 : 1,294.69 = 560.34 : x
  2. Step 2: Convert to fraction form
    938.19/1,294.69 = 560.34/x
  3. Step 3: Cross multiply
    938.19x = 1,294.69 × 560.34
  4. Step 4: Simplify right side
    938.19x = 725,466.59
  5. Step 5: Solve for x
    x = 725,466.59/938.19
  6. Step 6: Final answer
    x = 773.26

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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.