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Finding the Fourth Proportional to 531.33, 793.20 and 449.29

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Solution

The fourth proportional to 531.33, 793.20 and 449.29 is: 670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.33 : 793.20 = 449.29 : x
  2. Step 2: Convert to fraction form
    531.33/793.20 = 449.29/x
  3. Step 3: Cross multiply
    531.33x = 793.20 × 449.29
  4. Step 4: Simplify right side
    531.33x = 356,376.83
  5. Step 5: Solve for x
    x = 356,376.83/531.33
  6. Step 6: Final answer
    x = 670.73

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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.