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Finding the Fourth Proportional to 372.83, 558.72 and 308.23

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Solution

The fourth proportional to 372.83, 558.72 and 308.23 is: 461.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.83 : 558.72 = 308.23 : x
  2. Step 2: Convert to fraction form
    372.83/558.72 = 308.23/x
  3. Step 3: Cross multiply
    372.83x = 558.72 × 308.23
  4. Step 4: Simplify right side
    372.83x = 172,212.87
  5. Step 5: Solve for x
    x = 172,212.87/372.83
  6. Step 6: Final answer
    x = 461.91

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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.