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Finding the Fourth Proportional to 60.99, 84.15 and 59.91

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Solution

The fourth proportional to 60.99, 84.15 and 59.91 is: 82.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.99 : 84.15 = 59.91 : x
  2. Step 2: Convert to fraction form
    60.99/84.15 = 59.91/x
  3. Step 3: Cross multiply
    60.99x = 84.15 × 59.91
  4. Step 4: Simplify right side
    60.99x = 5,041.43
  5. Step 5: Solve for x
    x = 5,041.43/60.99
  6. Step 6: Final answer
    x = 82.66

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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.