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Finding the Fourth Proportional to 1,024.30, 1,536.44 and 869.84

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Solution

The fourth proportional to 1,024.30, 1,536.44 and 869.84 is: 1,304.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024.30 : 1,536.44 = 869.84 : x
  2. Step 2: Convert to fraction form
    1,024.30/1,536.44 = 869.84/x
  3. Step 3: Cross multiply
    1,024.30x = 1,536.44 × 869.84
  4. Step 4: Simplify right side
    1,024.30x = 1,336,458.04
  5. Step 5: Solve for x
    x = 1,336,458.04/1,024.30
  6. Step 6: Final answer
    x = 1,304.76

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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.