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Finding the Fourth Proportional to 1,198.95, 1,655.10 and 801.27

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Solution

The fourth proportional to 1,198.95, 1,655.10 and 801.27 is: 1,106.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.95 : 1,655.10 = 801.27 : x
  2. Step 2: Convert to fraction form
    1,198.95/1,655.10 = 801.27/x
  3. Step 3: Cross multiply
    1,198.95x = 1,655.10 × 801.27
  4. Step 4: Simplify right side
    1,198.95x = 1,326,181.98
  5. Step 5: Solve for x
    x = 1,326,181.98/1,198.95
  6. Step 6: Final answer
    x = 1,106.12

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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.