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Finding the Fourth Proportional to 237.32, 355.80 and 90.98

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Solution

The fourth proportional to 237.32, 355.80 and 90.98 is: 136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.32 : 355.80 = 90.98 : x
  2. Step 2: Convert to fraction form
    237.32/355.80 = 90.98/x
  3. Step 3: Cross multiply
    237.32x = 355.80 × 90.98
  4. Step 4: Simplify right side
    237.32x = 32,370.68
  5. Step 5: Solve for x
    x = 32,370.68/237.32
  6. Step 6: Final answer
    x = 136.40

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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.