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Finding the Fourth Proportional to 531.48, 795.54 and 449.88

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Solution

The fourth proportional to 531.48, 795.54 and 449.88 is: 673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.48 : 795.54 = 449.88 : x
  2. Step 2: Convert to fraction form
    531.48/795.54 = 449.88/x
  3. Step 3: Cross multiply
    531.48x = 795.54 × 449.88
  4. Step 4: Simplify right side
    531.48x = 357,897.54
  5. Step 5: Solve for x
    x = 357,897.54/531.48
  6. Step 6: Final answer
    x = 673.40

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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.