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Finding the Fourth Proportional to 802.87, 1,108.06 and 554.33

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Solution

The fourth proportional to 802.87, 1,108.06 and 554.33 is: 765.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.87 : 1,108.06 = 554.33 : x
  2. Step 2: Convert to fraction form
    802.87/1,108.06 = 554.33/x
  3. Step 3: Cross multiply
    802.87x = 1,108.06 × 554.33
  4. Step 4: Simplify right side
    802.87x = 614,230.90
  5. Step 5: Solve for x
    x = 614,230.90/802.87
  6. Step 6: Final answer
    x = 765.04

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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.