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Finding the Fourth Proportional to 1,167.84, 1,747.95 and 859.62

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Solution

The fourth proportional to 1,167.84, 1,747.95 and 859.62 is: 1,286.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.84 : 1,747.95 = 859.62 : x
  2. Step 2: Convert to fraction form
    1,167.84/1,747.95 = 859.62/x
  3. Step 3: Cross multiply
    1,167.84x = 1,747.95 × 859.62
  4. Step 4: Simplify right side
    1,167.84x = 1,502,572.78
  5. Step 5: Solve for x
    x = 1,502,572.78/1,167.84
  6. Step 6: Final answer
    x = 1,286.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.