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Finding the Fourth Proportional to 996.91, 1,377.61 and 760.59

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Solution

The fourth proportional to 996.91, 1,377.61 and 760.59 is: 1,051.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.91 : 1,377.61 = 760.59 : x
  2. Step 2: Convert to fraction form
    996.91/1,377.61 = 760.59/x
  3. Step 3: Cross multiply
    996.91x = 1,377.61 × 760.59
  4. Step 4: Simplify right side
    996.91x = 1,047,794.49
  5. Step 5: Solve for x
    x = 1,047,794.49/996.91
  6. Step 6: Final answer
    x = 1,051.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.