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Finding the Fourth Proportional to 614.56, 921.11 and 249.30

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Solution

The fourth proportional to 614.56, 921.11 and 249.30 is: 373.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.56 : 921.11 = 249.30 : x
  2. Step 2: Convert to fraction form
    614.56/921.11 = 249.30/x
  3. Step 3: Cross multiply
    614.56x = 921.11 × 249.30
  4. Step 4: Simplify right side
    614.56x = 229,632.72
  5. Step 5: Solve for x
    x = 229,632.72/614.56
  6. Step 6: Final answer
    x = 373.65

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.