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Finding the Fourth Proportional to 937.28, 1,293.38 and 538.86

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Solution

The fourth proportional to 937.28, 1,293.38 and 538.86 is: 743.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.28 : 1,293.38 = 538.86 : x
  2. Step 2: Convert to fraction form
    937.28/1,293.38 = 538.86/x
  3. Step 3: Cross multiply
    937.28x = 1,293.38 × 538.86
  4. Step 4: Simplify right side
    937.28x = 696,950.75
  5. Step 5: Solve for x
    x = 696,950.75/937.28
  6. Step 6: Final answer
    x = 743.59

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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.