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Finding the Fourth Proportional to 580.10, 868.58 and 424.85

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Solution

The fourth proportional to 580.10, 868.58 and 424.85 is: 636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.10 : 868.58 = 424.85 : x
  2. Step 2: Convert to fraction form
    580.10/868.58 = 424.85/x
  3. Step 3: Cross multiply
    580.10x = 868.58 × 424.85
  4. Step 4: Simplify right side
    580.10x = 369,014.60
  5. Step 5: Solve for x
    x = 369,014.60/580.10
  6. Step 6: Final answer
    x = 636.12

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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.