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Finding the Fourth Proportional to 649.83, 974.34 and 284.52

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Solution

The fourth proportional to 649.83, 974.34 and 284.52 is: 426.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.83 : 974.34 = 284.52 : x
  2. Step 2: Convert to fraction form
    649.83/974.34 = 284.52/x
  3. Step 3: Cross multiply
    649.83x = 974.34 × 284.52
  4. Step 4: Simplify right side
    649.83x = 277,219.22
  5. Step 5: Solve for x
    x = 277,219.22/649.83
  6. Step 6: Final answer
    x = 426.60

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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.