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Finding the Fourth Proportional to 373.56, 560.36 and 99.65

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Solution

The fourth proportional to 373.56, 560.36 and 99.65 is: 149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.56 : 560.36 = 99.65 : x
  2. Step 2: Convert to fraction form
    373.56/560.36 = 99.65/x
  3. Step 3: Cross multiply
    373.56x = 560.36 × 99.65
  4. Step 4: Simplify right side
    373.56x = 55,836.57
  5. Step 5: Solve for x
    x = 55,836.57/373.56
  6. Step 6: Final answer
    x = 149.47

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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.