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Finding the Fourth Proportional to 330.65, 495.98 and 125.18

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Solution

The fourth proportional to 330.65, 495.98 and 125.18 is: 187.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.65 : 495.98 = 125.18 : x
  2. Step 2: Convert to fraction form
    330.65/495.98 = 125.18/x
  3. Step 3: Cross multiply
    330.65x = 495.98 × 125.18
  4. Step 4: Simplify right side
    330.65x = 62,083.91
  5. Step 5: Solve for x
    x = 62,083.91/330.65
  6. Step 6: Final answer
    x = 187.77

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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.