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Finding the Fourth Proportional to 439.36, 658.66 and 195.70

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Solution

The fourth proportional to 439.36, 658.66 and 195.70 is: 293.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.36 : 658.66 = 195.70 : x
  2. Step 2: Convert to fraction form
    439.36/658.66 = 195.70/x
  3. Step 3: Cross multiply
    439.36x = 658.66 × 195.70
  4. Step 4: Simplify right side
    439.36x = 128,899.76
  5. Step 5: Solve for x
    x = 128,899.76/439.36
  6. Step 6: Final answer
    x = 293.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.