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Finding the Fourth Proportional to 185.30, 277.80 and 69.68

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Solution

The fourth proportional to 185.30, 277.80 and 69.68 is: 104.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.30 : 277.80 = 69.68 : x
  2. Step 2: Convert to fraction form
    185.30/277.80 = 69.68/x
  3. Step 3: Cross multiply
    185.30x = 277.80 × 69.68
  4. Step 4: Simplify right side
    185.30x = 19,357.15
  5. Step 5: Solve for x
    x = 19,357.15/185.30
  6. Step 6: Final answer
    x = 104.46

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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.