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Finding the Fourth Proportional to 1,195.62, 1,649.69 and 671.62

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Solution

The fourth proportional to 1,195.62, 1,649.69 and 671.62 is: 926.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.62 : 1,649.69 = 671.62 : x
  2. Step 2: Convert to fraction form
    1,195.62/1,649.69 = 671.62/x
  3. Step 3: Cross multiply
    1,195.62x = 1,649.69 × 671.62
  4. Step 4: Simplify right side
    1,195.62x = 1,107,957.32
  5. Step 5: Solve for x
    x = 1,107,957.32/1,195.62
  6. Step 6: Final answer
    x = 926.68

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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.