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Finding the Fourth Proportional to 372.19, 558.23 and 98.30

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Solution

The fourth proportional to 372.19, 558.23 and 98.30 is: 147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.19 : 558.23 = 98.30 : x
  2. Step 2: Convert to fraction form
    372.19/558.23 = 98.30/x
  3. Step 3: Cross multiply
    372.19x = 558.23 × 98.30
  4. Step 4: Simplify right side
    372.19x = 54,874.01
  5. Step 5: Solve for x
    x = 54,874.01/372.19
  6. Step 6: Final answer
    x = 147.44

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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.