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Finding the Fourth Proportional to 576.19, 864.17 and 165.23

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Solution

The fourth proportional to 576.19, 864.17 and 165.23 is: 247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.19 : 864.17 = 165.23 : x
  2. Step 2: Convert to fraction form
    576.19/864.17 = 165.23/x
  3. Step 3: Cross multiply
    576.19x = 864.17 × 165.23
  4. Step 4: Simplify right side
    576.19x = 142,788.14
  5. Step 5: Solve for x
    x = 142,788.14/576.19
  6. Step 6: Final answer
    x = 247.82

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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.