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Finding the Fourth Proportional to 373.29, 559.90 and 99.38

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Solution

The fourth proportional to 373.29, 559.90 and 99.38 is: 149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.29 : 559.90 = 99.38 : x
  2. Step 2: Convert to fraction form
    373.29/559.90 = 99.38/x
  3. Step 3: Cross multiply
    373.29x = 559.90 × 99.38
  4. Step 4: Simplify right side
    373.29x = 55,640.68
  5. Step 5: Solve for x
    x = 55,640.68/373.29
  6. Step 6: Final answer
    x = 149.05

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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.