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Finding the Fourth Proportional to 186.01, 278.49 and 144.84

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Solution

The fourth proportional to 186.01, 278.49 and 144.84 is: 216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.01 : 278.49 = 144.84 : x
  2. Step 2: Convert to fraction form
    186.01/278.49 = 144.84/x
  3. Step 3: Cross multiply
    186.01x = 278.49 × 144.84
  4. Step 4: Simplify right side
    186.01x = 40,336.49
  5. Step 5: Solve for x
    x = 40,336.49/186.01
  6. Step 6: Final answer
    x = 216.85

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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.