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Finding the Fourth Proportional to 802.67, 1,106.48 and 627.71

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Solution

The fourth proportional to 802.67, 1,106.48 and 627.71 is: 865.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.67 : 1,106.48 = 627.71 : x
  2. Step 2: Convert to fraction form
    802.67/1,106.48 = 627.71/x
  3. Step 3: Cross multiply
    802.67x = 1,106.48 × 627.71
  4. Step 4: Simplify right side
    802.67x = 694,545.42
  5. Step 5: Solve for x
    x = 694,545.42/802.67
  6. Step 6: Final answer
    x = 865.29

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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.