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Finding the Fourth Proportional to 1,012.52, 1,394.88 and 834.32

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Solution

The fourth proportional to 1,012.52, 1,394.88 and 834.32 is: 1,149.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.52 : 1,394.88 = 834.32 : x
  2. Step 2: Convert to fraction form
    1,012.52/1,394.88 = 834.32/x
  3. Step 3: Cross multiply
    1,012.52x = 1,394.88 × 834.32
  4. Step 4: Simplify right side
    1,012.52x = 1,163,776.28
  5. Step 5: Solve for x
    x = 1,163,776.28/1,012.52
  6. Step 6: Final answer
    x = 1,149.39

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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.