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Finding the Fourth Proportional to 576.95, 865.52 and 288.38

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Solution

The fourth proportional to 576.95, 865.52 and 288.38 is: 432.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.95 : 865.52 = 288.38 : x
  2. Step 2: Convert to fraction form
    576.95/865.52 = 288.38/x
  3. Step 3: Cross multiply
    576.95x = 865.52 × 288.38
  4. Step 4: Simplify right side
    576.95x = 249,592.89
  5. Step 5: Solve for x
    x = 249,592.89/576.95
  6. Step 6: Final answer
    x = 432.61

Related Problems

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Half scale
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Double scale
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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.