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Finding the Fourth Proportional to 55.14, 76.50 and 52.74

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Solution

The fourth proportional to 55.14, 76.50 and 52.74 is: 73.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.14 : 76.50 = 52.74 : x
  2. Step 2: Convert to fraction form
    55.14/76.50 = 52.74/x
  3. Step 3: Cross multiply
    55.14x = 76.50 × 52.74
  4. Step 4: Simplify right side
    55.14x = 4,034.61
  5. Step 5: Solve for x
    x = 4,034.61/55.14
  6. Step 6: Final answer
    x = 73.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.