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Finding the Fourth Proportional to 60.66, 83.21 and 59.54

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Solution

The fourth proportional to 60.66, 83.21 and 59.54 is: 81.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.66 : 83.21 = 59.54 : x
  2. Step 2: Convert to fraction form
    60.66/83.21 = 59.54/x
  3. Step 3: Cross multiply
    60.66x = 83.21 × 59.54
  4. Step 4: Simplify right side
    60.66x = 4,953.61
  5. Step 5: Solve for x
    x = 4,953.61/60.66
  6. Step 6: Final answer
    x = 81.66

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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.