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Finding the Fourth Proportional to 330.62, 495.25 and 282.08

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Solution

The fourth proportional to 330.62, 495.25 and 282.08 is: 422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.62 : 495.25 = 282.08 : x
  2. Step 2: Convert to fraction form
    330.62/495.25 = 282.08/x
  3. Step 3: Cross multiply
    330.62x = 495.25 × 282.08
  4. Step 4: Simplify right side
    330.62x = 139,700.65
  5. Step 5: Solve for x
    x = 139,700.65/330.62
  6. Step 6: Final answer
    x = 422.55

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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.