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Finding the Fourth Proportional to 1,660.83, 2,292 and 914.85

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Solution

The fourth proportional to 1,660.83, 2,292 and 914.85 is: 1,262.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.83 : 2,292 = 914.85 : x
  2. Step 2: Convert to fraction form
    1,660.83/2,292 = 914.85/x
  3. Step 3: Cross multiply
    1,660.83x = 2,292 × 914.85
  4. Step 4: Simplify right side
    1,660.83x = 2,096,836.20
  5. Step 5: Solve for x
    x = 2,096,836.20/1,660.83
  6. Step 6: Final answer
    x = 1,262.52

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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.