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Finding the Fourth Proportional to 1,184.33, 1,634.49 and 686.94

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Solution

The fourth proportional to 1,184.33, 1,634.49 and 686.94 is: 948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,184.33 : 1,634.49 = 686.94 : x
  2. Step 2: Convert to fraction form
    1,184.33/1,634.49 = 686.94/x
  3. Step 3: Cross multiply
    1,184.33x = 1,634.49 × 686.94
  4. Step 4: Simplify right side
    1,184.33x = 1,122,796.56
  5. Step 5: Solve for x
    x = 1,122,796.56/1,184.33
  6. Step 6: Final answer
    x = 948.05

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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.