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Finding the Fourth Proportional to 517.49, 776.14 and 170.81

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Solution

The fourth proportional to 517.49, 776.14 and 170.81 is: 256.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.49 : 776.14 = 170.81 : x
  2. Step 2: Convert to fraction form
    517.49/776.14 = 170.81/x
  3. Step 3: Cross multiply
    517.49x = 776.14 × 170.81
  4. Step 4: Simplify right side
    517.49x = 132,572.47
  5. Step 5: Solve for x
    x = 132,572.47/517.49
  6. Step 6: Final answer
    x = 256.18

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.