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Finding the Fourth Proportional to 576.59, 862.75 and 345.60

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Solution

The fourth proportional to 576.59, 862.75 and 345.60 is: 517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.59 : 862.75 = 345.60 : x
  2. Step 2: Convert to fraction form
    576.59/862.75 = 345.60/x
  3. Step 3: Cross multiply
    576.59x = 862.75 × 345.60
  4. Step 4: Simplify right side
    576.59x = 298,166.83
  5. Step 5: Solve for x
    x = 298,166.83/576.59
  6. Step 6: Final answer
    x = 517.13

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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.