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Finding the Fourth Proportional to 473.48, 707.29 and 449.80

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Solution

The fourth proportional to 473.48, 707.29 and 449.80 is: 671.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.48 : 707.29 = 449.80 : x
  2. Step 2: Convert to fraction form
    473.48/707.29 = 449.80/x
  3. Step 3: Cross multiply
    473.48x = 707.29 × 449.80
  4. Step 4: Simplify right side
    473.48x = 318,139.04
  5. Step 5: Solve for x
    x = 318,139.04/473.48
  6. Step 6: Final answer
    x = 671.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.