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Finding the Fourth Proportional to 330.50, 495.61 and 125.08

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Solution

The fourth proportional to 330.50, 495.61 and 125.08 is: 187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.50 : 495.61 = 125.08 : x
  2. Step 2: Convert to fraction form
    330.50/495.61 = 125.08/x
  3. Step 3: Cross multiply
    330.50x = 495.61 × 125.08
  4. Step 4: Simplify right side
    330.50x = 61,989.35
  5. Step 5: Solve for x
    x = 61,989.35/330.50
  6. Step 6: Final answer
    x = 187.56

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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.