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Finding the Fourth Proportional to 57.52, 79.42 and 43

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Solution

The fourth proportional to 57.52, 79.42 and 43 is: 59.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.52 : 79.42 = 43 : x
  2. Step 2: Convert to fraction form
    57.52/79.42 = 43/x
  3. Step 3: Cross multiply
    57.52x = 79.42 × 43
  4. Step 4: Simplify right side
    57.52x = 3,415.06
  5. Step 5: Solve for x
    x = 3,415.06/57.52
  6. Step 6: Final answer
    x = 59.37

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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.