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Finding the Fourth Proportional to 802.24, 1,104.88 and 691.68

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Solution

The fourth proportional to 802.24, 1,104.88 and 691.68 is: 952.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.24 : 1,104.88 = 691.68 : x
  2. Step 2: Convert to fraction form
    802.24/1,104.88 = 691.68/x
  3. Step 3: Cross multiply
    802.24x = 1,104.88 × 691.68
  4. Step 4: Simplify right side
    802.24x = 764,223.40
  5. Step 5: Solve for x
    x = 764,223.40/802.24
  6. Step 6: Final answer
    x = 952.61

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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.