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Finding the Fourth Proportional to 1,195.83, 1,649.86 and 974.39

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Solution

The fourth proportional to 1,195.83, 1,649.86 and 974.39 is: 1,344.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.83 : 1,649.86 = 974.39 : x
  2. Step 2: Convert to fraction form
    1,195.83/1,649.86 = 974.39/x
  3. Step 3: Cross multiply
    1,195.83x = 1,649.86 × 974.39
  4. Step 4: Simplify right side
    1,195.83x = 1,607,607.09
  5. Step 5: Solve for x
    x = 1,607,607.09/1,195.83
  6. Step 6: Final answer
    x = 1,344.34

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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.