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Finding the Fourth Proportional to 374.91, 516.56 and 258.27

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Solution

The fourth proportional to 374.91, 516.56 and 258.27 is: 355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.91 : 516.56 = 258.27 : x
  2. Step 2: Convert to fraction form
    374.91/516.56 = 258.27/x
  3. Step 3: Cross multiply
    374.91x = 516.56 × 258.27
  4. Step 4: Simplify right side
    374.91x = 133,410.66
  5. Step 5: Solve for x
    x = 133,410.66/374.91
  6. Step 6: Final answer
    x = 355.85

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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.