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Finding the Fourth Proportional to 55.97, 77.27 and 55.79

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Solution

The fourth proportional to 55.97, 77.27 and 55.79 is: 77.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.97 : 77.27 = 55.79 : x
  2. Step 2: Convert to fraction form
    55.97/77.27 = 55.79/x
  3. Step 3: Cross multiply
    55.97x = 77.27 × 55.79
  4. Step 4: Simplify right side
    55.97x = 4,310.61
  5. Step 5: Solve for x
    x = 4,310.61/55.97
  6. Step 6: Final answer
    x = 77.02

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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.