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Finding the Fourth Proportional to 489.62, 732.60 and 293.90

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Solution

The fourth proportional to 489.62, 732.60 and 293.90 is: 439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.62 : 732.60 = 293.90 : x
  2. Step 2: Convert to fraction form
    489.62/732.60 = 293.90/x
  3. Step 3: Cross multiply
    489.62x = 732.60 × 293.90
  4. Step 4: Simplify right side
    489.62x = 215,311.14
  5. Step 5: Solve for x
    x = 215,311.14/489.62
  6. Step 6: Final answer
    x = 439.75

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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.