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Finding the Fourth Proportional to 237.20, 355.80 and 100.35

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Solution

The fourth proportional to 237.20, 355.80 and 100.35 is: 150.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.20 : 355.80 = 100.35 : x
  2. Step 2: Convert to fraction form
    237.20/355.80 = 100.35/x
  3. Step 3: Cross multiply
    237.20x = 355.80 × 100.35
  4. Step 4: Simplify right side
    237.20x = 35,702.75
  5. Step 5: Solve for x
    x = 35,702.75/237.20
  6. Step 6: Final answer
    x = 150.52

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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.