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Finding the Fourth Proportional to 576.70, 864.56 and 268.38

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Solution

The fourth proportional to 576.70, 864.56 and 268.38 is: 402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.70 : 864.56 = 268.38 : x
  2. Step 2: Convert to fraction form
    576.70/864.56 = 268.38/x
  3. Step 3: Cross multiply
    576.70x = 864.56 × 268.38
  4. Step 4: Simplify right side
    576.70x = 232,031.28
  5. Step 5: Solve for x
    x = 232,031.28/576.70
  6. Step 6: Final answer
    x = 402.34

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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.