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Finding the Fourth Proportional to 487.90, 732.26 and 195.61

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Solution

The fourth proportional to 487.90, 732.26 and 195.61 is: 293.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.90 : 732.26 = 195.61 : x
  2. Step 2: Convert to fraction form
    487.90/732.26 = 195.61/x
  3. Step 3: Cross multiply
    487.90x = 732.26 × 195.61
  4. Step 4: Simplify right side
    487.90x = 143,236.04
  5. Step 5: Solve for x
    x = 143,236.04/487.90
  6. Step 6: Final answer
    x = 293.58

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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.