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Finding the Fourth Proportional to 374.12, 516.17 and 291.08

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Solution

The fourth proportional to 374.12, 516.17 and 291.08 is: 401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.12 : 516.17 = 291.08 : x
  2. Step 2: Convert to fraction form
    374.12/516.17 = 291.08/x
  3. Step 3: Cross multiply
    374.12x = 516.17 × 291.08
  4. Step 4: Simplify right side
    374.12x = 150,242.73
  5. Step 5: Solve for x
    x = 150,242.73/374.12
  6. Step 6: Final answer
    x = 401.60

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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.