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Finding the Fourth Proportional to 373.13, 559.68 and 99.22

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Solution

The fourth proportional to 373.13, 559.68 and 99.22 is: 148.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.13 : 559.68 = 99.22 : x
  2. Step 2: Convert to fraction form
    373.13/559.68 = 99.22/x
  3. Step 3: Cross multiply
    373.13x = 559.68 × 99.22
  4. Step 4: Simplify right side
    373.13x = 55,530.95
  5. Step 5: Solve for x
    x = 55,530.95/373.13
  6. Step 6: Final answer
    x = 148.83

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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.