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Finding the Fourth Proportional to 758.11, 1,136.87 and 295.83

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Solution

The fourth proportional to 758.11, 1,136.87 and 295.83 is: 443.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.11 : 1,136.87 = 295.83 : x
  2. Step 2: Convert to fraction form
    758.11/1,136.87 = 295.83/x
  3. Step 3: Cross multiply
    758.11x = 1,136.87 × 295.83
  4. Step 4: Simplify right side
    758.11x = 336,320.25
  5. Step 5: Solve for x
    x = 336,320.25/758.11
  6. Step 6: Final answer
    x = 443.63

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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.