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Finding the Fourth Proportional to 1,787.06, 2,680.51 and 488.53

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Solution

The fourth proportional to 1,787.06, 2,680.51 and 488.53 is: 732.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.06 : 2,680.51 = 488.53 : x
  2. Step 2: Convert to fraction form
    1,787.06/2,680.51 = 488.53/x
  3. Step 3: Cross multiply
    1,787.06x = 2,680.51 × 488.53
  4. Step 4: Simplify right side
    1,787.06x = 1,309,493.71
  5. Step 5: Solve for x
    x = 1,309,493.71/1,787.06
  6. Step 6: Final answer
    x = 732.76

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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.