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Finding the Fourth Proportional to 531.85, 797.81 and 166.65

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Solution

The fourth proportional to 531.85, 797.81 and 166.65 is: 249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.85 : 797.81 = 166.65 : x
  2. Step 2: Convert to fraction form
    531.85/797.81 = 166.65/x
  3. Step 3: Cross multiply
    531.85x = 797.81 × 166.65
  4. Step 4: Simplify right side
    531.85x = 132,955.04
  5. Step 5: Solve for x
    x = 132,955.04/531.85
  6. Step 6: Final answer
    x = 249.99

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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.