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Finding the Fourth Proportional to 186.52, 280.90 and 162.76

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Solution

The fourth proportional to 186.52, 280.90 and 162.76 is: 245.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.52 : 280.90 = 162.76 : x
  2. Step 2: Convert to fraction form
    186.52/280.90 = 162.76/x
  3. Step 3: Cross multiply
    186.52x = 280.90 × 162.76
  4. Step 4: Simplify right side
    186.52x = 45,719.28
  5. Step 5: Solve for x
    x = 45,719.28/186.52
  6. Step 6: Final answer
    x = 245.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.