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Finding the Fourth Proportional to 576.66, 865.44 and 302.88

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Solution

The fourth proportional to 576.66, 865.44 and 302.88 is: 454.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.66 : 865.44 = 302.88 : x
  2. Step 2: Convert to fraction form
    576.66/865.44 = 302.88/x
  3. Step 3: Cross multiply
    576.66x = 865.44 × 302.88
  4. Step 4: Simplify right side
    576.66x = 262,124.47
  5. Step 5: Solve for x
    x = 262,124.47/576.66
  6. Step 6: Final answer
    x = 454.56

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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.