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Finding the Fourth Proportional to 1,294.17, 1,785.99 and 704.74

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Solution

The fourth proportional to 1,294.17, 1,785.99 and 704.74 is: 972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.17 : 1,785.99 = 704.74 : x
  2. Step 2: Convert to fraction form
    1,294.17/1,785.99 = 704.74/x
  3. Step 3: Cross multiply
    1,294.17x = 1,785.99 × 704.74
  4. Step 4: Simplify right side
    1,294.17x = 1,258,658.59
  5. Step 5: Solve for x
    x = 1,258,658.59/1,294.17
  6. Step 6: Final answer
    x = 972.56

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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.