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Finding the Fourth Proportional to 1,236.26, 1,706.06 and 676.75

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Solution

The fourth proportional to 1,236.26, 1,706.06 and 676.75 is: 933.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.26 : 1,706.06 = 676.75 : x
  2. Step 2: Convert to fraction form
    1,236.26/1,706.06 = 676.75/x
  3. Step 3: Cross multiply
    1,236.26x = 1,706.06 × 676.75
  4. Step 4: Simplify right side
    1,236.26x = 1,154,575.46
  5. Step 5: Solve for x
    x = 1,154,575.46/1,236.26
  6. Step 6: Final answer
    x = 933.93

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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.