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Finding the Fourth Proportional to 60.28, 82.72 and 58.89

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Solution

The fourth proportional to 60.28, 82.72 and 58.89 is: 80.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.28 : 82.72 = 58.89 : x
  2. Step 2: Convert to fraction form
    60.28/82.72 = 58.89/x
  3. Step 3: Cross multiply
    60.28x = 82.72 × 58.89
  4. Step 4: Simplify right side
    60.28x = 4,871.76
  5. Step 5: Solve for x
    x = 4,871.76/60.28
  6. Step 6: Final answer
    x = 80.82

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.