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Finding the Fourth Proportional to 480.52, 663.15 and 306.10

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Solution

The fourth proportional to 480.52, 663.15 and 306.10 is: 422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.52 : 663.15 = 306.10 : x
  2. Step 2: Convert to fraction form
    480.52/663.15 = 306.10/x
  3. Step 3: Cross multiply
    480.52x = 663.15 × 306.10
  4. Step 4: Simplify right side
    480.52x = 202,990.22
  5. Step 5: Solve for x
    x = 202,990.22/480.52
  6. Step 6: Final answer
    x = 422.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.