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Finding the Fourth Proportional to 439.18, 658.54 and 195.59

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Solution

The fourth proportional to 439.18, 658.54 and 195.59 is: 293.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.18 : 658.54 = 195.59 : x
  2. Step 2: Convert to fraction form
    439.18/658.54 = 195.59/x
  3. Step 3: Cross multiply
    439.18x = 658.54 × 195.59
  4. Step 4: Simplify right side
    439.18x = 128,803.84
  5. Step 5: Solve for x
    x = 128,803.84/439.18
  6. Step 6: Final answer
    x = 293.28

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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.