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Finding the Fourth Proportional to 531.50, 797.20 and 166.19

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Solution

The fourth proportional to 531.50, 797.20 and 166.19 is: 249.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.50 : 797.20 = 166.19 : x
  2. Step 2: Convert to fraction form
    531.50/797.20 = 166.19/x
  3. Step 3: Cross multiply
    531.50x = 797.20 × 166.19
  4. Step 4: Simplify right side
    531.50x = 132,486.67
  5. Step 5: Solve for x
    x = 132,486.67/531.50
  6. Step 6: Final answer
    x = 249.27

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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.