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Finding the Fourth Proportional to 1,101.03, 1,651.52 and 451.31

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Solution

The fourth proportional to 1,101.03, 1,651.52 and 451.31 is: 676.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.03 : 1,651.52 = 451.31 : x
  2. Step 2: Convert to fraction form
    1,101.03/1,651.52 = 451.31/x
  3. Step 3: Cross multiply
    1,101.03x = 1,651.52 × 451.31
  4. Step 4: Simplify right side
    1,101.03x = 745,340.36
  5. Step 5: Solve for x
    x = 745,340.36/1,101.03
  6. Step 6: Final answer
    x = 676.95

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Double scale
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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.