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Finding the Fourth Proportional to 832.92, 1,149.96 and 538.72

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Solution

The fourth proportional to 832.92, 1,149.96 and 538.72 is: 743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.92 : 1,149.96 = 538.72 : x
  2. Step 2: Convert to fraction form
    832.92/1,149.96 = 538.72/x
  3. Step 3: Cross multiply
    832.92x = 1,149.96 × 538.72
  4. Step 4: Simplify right side
    832.92x = 619,506.45
  5. Step 5: Solve for x
    x = 619,506.45/832.92
  6. Step 6: Final answer
    x = 743.78

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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.