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Finding the Fourth Proportional to 962.43, 1,328.18 and 542.86

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Solution

The fourth proportional to 962.43, 1,328.18 and 542.86 is: 749.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.43 : 1,328.18 = 542.86 : x
  2. Step 2: Convert to fraction form
    962.43/1,328.18 = 542.86/x
  3. Step 3: Cross multiply
    962.43x = 1,328.18 × 542.86
  4. Step 4: Simplify right side
    962.43x = 721,015.79
  5. Step 5: Solve for x
    x = 721,015.79/962.43
  6. Step 6: Final answer
    x = 749.16

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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.