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Finding the Fourth Proportional to 539.50, 809.11 and 174.19

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Solution

The fourth proportional to 539.50, 809.11 and 174.19 is: 261.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.50 : 809.11 = 174.19 : x
  2. Step 2: Convert to fraction form
    539.50/809.11 = 174.19/x
  3. Step 3: Cross multiply
    539.50x = 809.11 × 174.19
  4. Step 4: Simplify right side
    539.50x = 140,938.87
  5. Step 5: Solve for x
    x = 140,938.87/539.50
  6. Step 6: Final answer
    x = 261.24

Related Problems

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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.