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Finding the Fourth Proportional to 55.36, 76.07 and 51.76

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Solution

The fourth proportional to 55.36, 76.07 and 51.76 is: 71.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.36 : 76.07 = 51.76 : x
  2. Step 2: Convert to fraction form
    55.36/76.07 = 51.76/x
  3. Step 3: Cross multiply
    55.36x = 76.07 × 51.76
  4. Step 4: Simplify right side
    55.36x = 3,937.38
  5. Step 5: Solve for x
    x = 3,937.38/55.36
  6. Step 6: Final answer
    x = 71.12

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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.