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Finding the Fourth Proportional to 531.31, 795.42 and 480.08

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Solution

The fourth proportional to 531.31, 795.42 and 480.08 is: 718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.31 : 795.42 = 480.08 : x
  2. Step 2: Convert to fraction form
    531.31/795.42 = 480.08/x
  3. Step 3: Cross multiply
    531.31x = 795.42 × 480.08
  4. Step 4: Simplify right side
    531.31x = 381,862.75
  5. Step 5: Solve for x
    x = 381,862.75/531.31
  6. Step 6: Final answer
    x = 718.72

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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.