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Finding the Fourth Proportional to 185.86, 278.82 and 104.80

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Solution

The fourth proportional to 185.86, 278.82 and 104.80 is: 157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.86 : 278.82 = 104.80 : x
  2. Step 2: Convert to fraction form
    185.86/278.82 = 104.80/x
  3. Step 3: Cross multiply
    185.86x = 278.82 × 104.80
  4. Step 4: Simplify right side
    185.86x = 29,220.34
  5. Step 5: Solve for x
    x = 29,220.34/185.86
  6. Step 6: Final answer
    x = 157.22

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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.