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Finding the Fourth Proportional to 373.91, 561.03 and 130.61

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Solution

The fourth proportional to 373.91, 561.03 and 130.61 is: 195.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.91 : 561.03 = 130.61 : x
  2. Step 2: Convert to fraction form
    373.91/561.03 = 130.61/x
  3. Step 3: Cross multiply
    373.91x = 561.03 × 130.61
  4. Step 4: Simplify right side
    373.91x = 73,278.02
  5. Step 5: Solve for x
    x = 73,278.02/373.91
  6. Step 6: Final answer
    x = 195.98

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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.