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Finding the Fourth Proportional to 662.31, 914.07 and 531.69

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Solution

The fourth proportional to 662.31, 914.07 and 531.69 is: 733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.31 : 914.07 = 531.69 : x
  2. Step 2: Convert to fraction form
    662.31/914.07 = 531.69/x
  3. Step 3: Cross multiply
    662.31x = 914.07 × 531.69
  4. Step 4: Simplify right side
    662.31x = 486,001.88
  5. Step 5: Solve for x
    x = 486,001.88/662.31
  6. Step 6: Final answer
    x = 733.80

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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.