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Finding the Fourth Proportional to 57.29, 79.00 and 43.47

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Solution

The fourth proportional to 57.29, 79.00 and 43.47 is: 59.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.29 : 79.00 = 43.47 : x
  2. Step 2: Convert to fraction form
    57.29/79.00 = 43.47/x
  3. Step 3: Cross multiply
    57.29x = 79.00 × 43.47
  4. Step 4: Simplify right side
    57.29x = 3,434.02
  5. Step 5: Solve for x
    x = 3,434.02/57.29
  6. Step 6: Final answer
    x = 59.95

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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.