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Finding the Fourth Proportional to 968.92, 1,337.28 and 576.16

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Solution

The fourth proportional to 968.92, 1,337.28 and 576.16 is: 795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.92 : 1,337.28 = 576.16 : x
  2. Step 2: Convert to fraction form
    968.92/1,337.28 = 576.16/x
  3. Step 3: Cross multiply
    968.92x = 1,337.28 × 576.16
  4. Step 4: Simplify right side
    968.92x = 770,487.24
  5. Step 5: Solve for x
    x = 770,487.24/968.92
  6. Step 6: Final answer
    x = 795.20

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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.