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Finding the Fourth Proportional to 1,780.91, 2,671.33 and 482.34

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Solution

The fourth proportional to 1,780.91, 2,671.33 and 482.34 is: 723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.91 : 2,671.33 = 482.34 : x
  2. Step 2: Convert to fraction form
    1,780.91/2,671.33 = 482.34/x
  3. Step 3: Cross multiply
    1,780.91x = 2,671.33 × 482.34
  4. Step 4: Simplify right side
    1,780.91x = 1,288,489.31
  5. Step 5: Solve for x
    x = 1,288,489.31/1,780.91
  6. Step 6: Final answer
    x = 723.50

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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.