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Finding the Fourth Proportional to 279.29, 418.67 and 176.25

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Solution

The fourth proportional to 279.29, 418.67 and 176.25 is: 264.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.29 : 418.67 = 176.25 : x
  2. Step 2: Convert to fraction form
    279.29/418.67 = 176.25/x
  3. Step 3: Cross multiply
    279.29x = 418.67 × 176.25
  4. Step 4: Simplify right side
    279.29x = 73,789.71
  5. Step 5: Solve for x
    x = 73,789.71/279.29
  6. Step 6: Final answer
    x = 264.21

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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.