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Finding the Fourth Proportional to 1,198.82, 1,655.02 and 841.01

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Solution

The fourth proportional to 1,198.82, 1,655.02 and 841.01 is: 1,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.82 : 1,655.02 = 841.01 : x
  2. Step 2: Convert to fraction form
    1,198.82/1,655.02 = 841.01/x
  3. Step 3: Cross multiply
    1,198.82x = 1,655.02 × 841.01
  4. Step 4: Simplify right side
    1,198.82x = 1,391,877.99
  5. Step 5: Solve for x
    x = 1,391,877.99/1,198.82
  6. Step 6: Final answer
    x = 1,161.04

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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.