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Finding the Fourth Proportional to 185.54, 278.15 and 104.23

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Solution

The fourth proportional to 185.54, 278.15 and 104.23 is: 156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.54 : 278.15 = 104.23 : x
  2. Step 2: Convert to fraction form
    185.54/278.15 = 104.23/x
  3. Step 3: Cross multiply
    185.54x = 278.15 × 104.23
  4. Step 4: Simplify right side
    185.54x = 28,990.36
  5. Step 5: Solve for x
    x = 28,990.36/185.54
  6. Step 6: Final answer
    x = 156.25

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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.