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Finding the Fourth Proportional to 1,450.59, 2,001.81 and 787.44

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Solution

The fourth proportional to 1,450.59, 2,001.81 and 787.44 is: 1,086.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.59 : 2,001.81 = 787.44 : x
  2. Step 2: Convert to fraction form
    1,450.59/2,001.81 = 787.44/x
  3. Step 3: Cross multiply
    1,450.59x = 2,001.81 × 787.44
  4. Step 4: Simplify right side
    1,450.59x = 1,576,305.27
  5. Step 5: Solve for x
    x = 1,576,305.27/1,450.59
  6. Step 6: Final answer
    x = 1,086.66

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1.5x scale

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.