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Finding the Fourth Proportional to 59.97, 82.21 and 59.91

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Solution

The fourth proportional to 59.97, 82.21 and 59.91 is: 82.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.97 : 82.21 = 59.91 : x
  2. Step 2: Convert to fraction form
    59.97/82.21 = 59.91/x
  3. Step 3: Cross multiply
    59.97x = 82.21 × 59.91
  4. Step 4: Simplify right side
    59.97x = 4,925.20
  5. Step 5: Solve for x
    x = 4,925.20/59.97
  6. Step 6: Final answer
    x = 82.13

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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.