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Finding the Fourth Proportional to 237.42, 356.18 and 100.40

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Solution

The fourth proportional to 237.42, 356.18 and 100.40 is: 150.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.42 : 356.18 = 100.40 : x
  2. Step 2: Convert to fraction form
    237.42/356.18 = 100.40/x
  3. Step 3: Cross multiply
    237.42x = 356.18 × 100.40
  4. Step 4: Simplify right side
    237.42x = 35,758.19
  5. Step 5: Solve for x
    x = 35,758.19/237.42
  6. Step 6: Final answer
    x = 150.61

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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.