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Finding the Fourth Proportional to 1,217.06, 1,822.95 and 754.95

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Solution

The fourth proportional to 1,217.06, 1,822.95 and 754.95 is: 1,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.06 : 1,822.95 = 754.95 : x
  2. Step 2: Convert to fraction form
    1,217.06/1,822.95 = 754.95/x
  3. Step 3: Cross multiply
    1,217.06x = 1,822.95 × 754.95
  4. Step 4: Simplify right side
    1,217.06x = 1,376,236.10
  5. Step 5: Solve for x
    x = 1,376,236.10/1,217.06
  6. Step 6: Final answer
    x = 1,130.79

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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.