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Finding the Fourth Proportional to 59.49, 88.56 and 54.95

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Solution

The fourth proportional to 59.49, 88.56 and 54.95 is: 81.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.49 : 88.56 = 54.95 : x
  2. Step 2: Convert to fraction form
    59.49/88.56 = 54.95/x
  3. Step 3: Cross multiply
    59.49x = 88.56 × 54.95
  4. Step 4: Simplify right side
    59.49x = 4,865.93
  5. Step 5: Solve for x
    x = 4,865.93/59.49
  6. Step 6: Final answer
    x = 81.79

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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.