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Finding the Fourth Proportional to 374.18, 516.36 and 218.92

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Solution

The fourth proportional to 374.18, 516.36 and 218.92 is: 302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.18 : 516.36 = 218.92 : x
  2. Step 2: Convert to fraction form
    374.18/516.36 = 218.92/x
  3. Step 3: Cross multiply
    374.18x = 516.36 × 218.92
  4. Step 4: Simplify right side
    374.18x = 113,041.53
  5. Step 5: Solve for x
    x = 113,041.53/374.18
  6. Step 6: Final answer
    x = 302.10

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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.