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Finding the Fourth Proportional to 184.91, 277.40 and 76.71

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Solution

The fourth proportional to 184.91, 277.40 and 76.71 is: 115.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.91 : 277.40 = 76.71 : x
  2. Step 2: Convert to fraction form
    184.91/277.40 = 76.71/x
  3. Step 3: Cross multiply
    184.91x = 277.40 × 76.71
  4. Step 4: Simplify right side
    184.91x = 21,278.97
  5. Step 5: Solve for x
    x = 21,278.97/184.91
  6. Step 6: Final answer
    x = 115.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.