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Finding the Fourth Proportional to 576.84, 865.38 and 288.12

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Solution

The fourth proportional to 576.84, 865.38 and 288.12 is: 432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.84 : 865.38 = 288.12 : x
  2. Step 2: Convert to fraction form
    576.84/865.38 = 288.12/x
  3. Step 3: Cross multiply
    576.84x = 865.38 × 288.12
  4. Step 4: Simplify right side
    576.84x = 249,333.29
  5. Step 5: Solve for x
    x = 249,333.29/576.84
  6. Step 6: Final answer
    x = 432.24

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Similar ratio
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1.5x scale

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.