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Finding the Fourth Proportional to 372.02, 558.14 and 140.98

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Solution

The fourth proportional to 372.02, 558.14 and 140.98 is: 211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.02 : 558.14 = 140.98 : x
  2. Step 2: Convert to fraction form
    372.02/558.14 = 140.98/x
  3. Step 3: Cross multiply
    372.02x = 558.14 × 140.98
  4. Step 4: Simplify right side
    372.02x = 78,685.01
  5. Step 5: Solve for x
    x = 78,685.01/372.02
  6. Step 6: Final answer
    x = 211.51

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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.