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Finding the Fourth Proportional to 609.57, 914.19 and 170.79

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Solution

The fourth proportional to 609.57, 914.19 and 170.79 is: 256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.57 : 914.19 = 170.79 : x
  2. Step 2: Convert to fraction form
    609.57/914.19 = 170.79/x
  3. Step 3: Cross multiply
    609.57x = 914.19 × 170.79
  4. Step 4: Simplify right side
    609.57x = 156,139.12
  5. Step 5: Solve for x
    x = 156,139.12/609.57
  6. Step 6: Final answer
    x = 256.15

Related Problems

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Half scale
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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.