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Finding the Fourth Proportional to 1,482.80, 2,046.16 and 819.65

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Solution

The fourth proportional to 1,482.80, 2,046.16 and 819.65 is: 1,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.80 : 2,046.16 = 819.65 : x
  2. Step 2: Convert to fraction form
    1,482.80/2,046.16 = 819.65/x
  3. Step 3: Cross multiply
    1,482.80x = 2,046.16 × 819.65
  4. Step 4: Simplify right side
    1,482.80x = 1,677,122.76
  5. Step 5: Solve for x
    x = 1,677,122.76/1,482.80
  6. Step 6: Final answer
    x = 1,131.05

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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.