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Finding the Fourth Proportional to 1,010.88, 1,519.68 and 829.62

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Solution

The fourth proportional to 1,010.88, 1,519.68 and 829.62 is: 1,247.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.88 : 1,519.68 = 829.62 : x
  2. Step 2: Convert to fraction form
    1,010.88/1,519.68 = 829.62/x
  3. Step 3: Cross multiply
    1,010.88x = 1,519.68 × 829.62
  4. Step 4: Simplify right side
    1,010.88x = 1,260,756.92
  5. Step 5: Solve for x
    x = 1,260,756.92/1,010.88
  6. Step 6: Final answer
    x = 1,247.19

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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.