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Finding the Fourth Proportional to 372.50, 558.75 and 98.62

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Solution

The fourth proportional to 372.50, 558.75 and 98.62 is: 147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.50 : 558.75 = 98.62 : x
  2. Step 2: Convert to fraction form
    372.50/558.75 = 98.62/x
  3. Step 3: Cross multiply
    372.50x = 558.75 × 98.62
  4. Step 4: Simplify right side
    372.50x = 55,102.90
  5. Step 5: Solve for x
    x = 55,102.90/372.50
  6. Step 6: Final answer
    x = 147.93

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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.