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Finding the Fourth Proportional to 250.42, 374.63 and 216.55

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Solution

The fourth proportional to 250.42, 374.63 and 216.55 is: 323.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.42 : 374.63 = 216.55 : x
  2. Step 2: Convert to fraction form
    250.42/374.63 = 216.55/x
  3. Step 3: Cross multiply
    250.42x = 374.63 × 216.55
  4. Step 4: Simplify right side
    250.42x = 81,123.17
  5. Step 5: Solve for x
    x = 81,123.17/250.42
  6. Step 6: Final answer
    x = 323.95

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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.