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Finding the Fourth Proportional to 282.89, 390.36 and 166.52

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Solution

The fourth proportional to 282.89, 390.36 and 166.52 is: 229.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.89 : 390.36 = 166.52 : x
  2. Step 2: Convert to fraction form
    282.89/390.36 = 166.52/x
  3. Step 3: Cross multiply
    282.89x = 390.36 × 166.52
  4. Step 4: Simplify right side
    282.89x = 65,002.75
  5. Step 5: Solve for x
    x = 65,002.75/282.89
  6. Step 6: Final answer
    x = 229.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.