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Finding the Fourth Proportional to 372.93, 559.04 and 218.90

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Solution

The fourth proportional to 372.93, 559.04 and 218.90 is: 328.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.93 : 559.04 = 218.90 : x
  2. Step 2: Convert to fraction form
    372.93/559.04 = 218.90/x
  3. Step 3: Cross multiply
    372.93x = 559.04 × 218.90
  4. Step 4: Simplify right side
    372.93x = 122,369.97
  5. Step 5: Solve for x
    x = 122,369.97/372.93
  6. Step 6: Final answer
    x = 328.13

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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.