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Finding the Fourth Proportional to 501.80, 753.30 and 449.55

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Solution

The fourth proportional to 501.80, 753.30 and 449.55 is: 674.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.80 : 753.30 = 449.55 : x
  2. Step 2: Convert to fraction form
    501.80/753.30 = 449.55/x
  3. Step 3: Cross multiply
    501.80x = 753.30 × 449.55
  4. Step 4: Simplify right side
    501.80x = 338,646.02
  5. Step 5: Solve for x
    x = 338,646.02/501.80
  6. Step 6: Final answer
    x = 674.87

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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.