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Finding the Fourth Proportional to 560.25, 773.14 and 311.61

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Solution

The fourth proportional to 560.25, 773.14 and 311.61 is: 430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.25 : 773.14 = 311.61 : x
  2. Step 2: Convert to fraction form
    560.25/773.14 = 311.61/x
  3. Step 3: Cross multiply
    560.25x = 773.14 × 311.61
  4. Step 4: Simplify right side
    560.25x = 240,918.16
  5. Step 5: Solve for x
    x = 240,918.16/560.25
  6. Step 6: Final answer
    x = 430.02

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.