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Finding the Fourth Proportional to 1,294, 1,785.86 and 734.62

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Solution

The fourth proportional to 1,294, 1,785.86 and 734.62 is: 1,013.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294 : 1,785.86 = 734.62 : x
  2. Step 2: Convert to fraction form
    1,294/1,785.86 = 734.62/x
  3. Step 3: Cross multiply
    1,294x = 1,785.86 × 734.62
  4. Step 4: Simplify right side
    1,294x = 1,311,924.80
  5. Step 5: Solve for x
    x = 1,311,924.80/1,294
  6. Step 6: Final answer
    x = 1,013.85

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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.