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Finding the Fourth Proportional to 531.15, 733.29 and 354.36

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Solution

The fourth proportional to 531.15, 733.29 and 354.36 is: 489.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.15 : 733.29 = 354.36 : x
  2. Step 2: Convert to fraction form
    531.15/733.29 = 354.36/x
  3. Step 3: Cross multiply
    531.15x = 733.29 × 354.36
  4. Step 4: Simplify right side
    531.15x = 259,848.64
  5. Step 5: Solve for x
    x = 259,848.64/531.15
  6. Step 6: Final answer
    x = 489.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.