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Finding the Fourth Proportional to 414.32, 619.65 and 331.70

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Solution

The fourth proportional to 414.32, 619.65 and 331.70 is: 496.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.32 : 619.65 = 331.70 : x
  2. Step 2: Convert to fraction form
    414.32/619.65 = 331.70/x
  3. Step 3: Cross multiply
    414.32x = 619.65 × 331.70
  4. Step 4: Simplify right side
    414.32x = 205,534.81
  5. Step 5: Solve for x
    x = 205,534.81/414.32
  6. Step 6: Final answer
    x = 496.08

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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.