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Finding the Fourth Proportional to 1,482.26, 2,045.52 and 819.12

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Solution

The fourth proportional to 1,482.26, 2,045.52 and 819.12 is: 1,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.26 : 2,045.52 = 819.12 : x
  2. Step 2: Convert to fraction form
    1,482.26/2,045.52 = 819.12/x
  3. Step 3: Cross multiply
    1,482.26x = 2,045.52 × 819.12
  4. Step 4: Simplify right side
    1,482.26x = 1,675,526.34
  5. Step 5: Solve for x
    x = 1,675,526.34/1,482.26
  6. Step 6: Final answer
    x = 1,130.39

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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.