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Finding the Fourth Proportional to 60.67, 90.47 and 59.71

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Solution

The fourth proportional to 60.67, 90.47 and 59.71 is: 89.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.67 : 90.47 = 59.71 : x
  2. Step 2: Convert to fraction form
    60.67/90.47 = 59.71/x
  3. Step 3: Cross multiply
    60.67x = 90.47 × 59.71
  4. Step 4: Simplify right side
    60.67x = 5,401.96
  5. Step 5: Solve for x
    x = 5,401.96/60.67
  6. Step 6: Final answer
    x = 89.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.