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Finding the Fourth Proportional to 531.78, 797.61 and 166.37

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Solution

The fourth proportional to 531.78, 797.61 and 166.37 is: 249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.78 : 797.61 = 166.37 : x
  2. Step 2: Convert to fraction form
    531.78/797.61 = 166.37/x
  3. Step 3: Cross multiply
    531.78x = 797.61 × 166.37
  4. Step 4: Simplify right side
    531.78x = 132,695.01
  5. Step 5: Solve for x
    x = 132,695.01/531.78
  6. Step 6: Final answer
    x = 249.53

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Double scale
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Similar ratio
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1.5x scale

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.