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Finding the Fourth Proportional to 882.69, 1,217.59 and 717.04

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Solution

The fourth proportional to 882.69, 1,217.59 and 717.04 is: 989.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.69 : 1,217.59 = 717.04 : x
  2. Step 2: Convert to fraction form
    882.69/1,217.59 = 717.04/x
  3. Step 3: Cross multiply
    882.69x = 1,217.59 × 717.04
  4. Step 4: Simplify right side
    882.69x = 873,060.73
  5. Step 5: Solve for x
    x = 873,060.73/882.69
  6. Step 6: Final answer
    x = 989.09

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1.5x scale

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.