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Finding the Fourth Proportional to 956.17, 1,432.22 and 722.49

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Solution

The fourth proportional to 956.17, 1,432.22 and 722.49 is: 1,082.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.17 : 1,432.22 = 722.49 : x
  2. Step 2: Convert to fraction form
    956.17/1,432.22 = 722.49/x
  3. Step 3: Cross multiply
    956.17x = 1,432.22 × 722.49
  4. Step 4: Simplify right side
    956.17x = 1,034,755.64
  5. Step 5: Solve for x
    x = 1,034,755.64/956.17
  6. Step 6: Final answer
    x = 1,082.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.