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Finding the Fourth Proportional to 374.42, 516.75 and 258.14

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Solution

The fourth proportional to 374.42, 516.75 and 258.14 is: 356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.42 : 516.75 = 258.14 : x
  2. Step 2: Convert to fraction form
    374.42/516.75 = 258.14/x
  3. Step 3: Cross multiply
    374.42x = 516.75 × 258.14
  4. Step 4: Simplify right side
    374.42x = 133,393.85
  5. Step 5: Solve for x
    x = 133,393.85/374.42
  6. Step 6: Final answer
    x = 356.27

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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.