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Finding the Fourth Proportional to 279.63, 386.04 and 169.13

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Solution

The fourth proportional to 279.63, 386.04 and 169.13 is: 233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.63 : 386.04 = 169.13 : x
  2. Step 2: Convert to fraction form
    279.63/386.04 = 169.13/x
  3. Step 3: Cross multiply
    279.63x = 386.04 × 169.13
  4. Step 4: Simplify right side
    279.63x = 65,289.02
  5. Step 5: Solve for x
    x = 65,289.02/279.63
  6. Step 6: Final answer
    x = 233.48

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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.