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Finding the Fourth Proportional to 802.32, 1,204.26 and 720.48

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Solution

The fourth proportional to 802.32, 1,204.26 and 720.48 is: 1,081.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.32 : 1,204.26 = 720.48 : x
  2. Step 2: Convert to fraction form
    802.32/1,204.26 = 720.48/x
  3. Step 3: Cross multiply
    802.32x = 1,204.26 × 720.48
  4. Step 4: Simplify right side
    802.32x = 867,645.24
  5. Step 5: Solve for x
    x = 867,645.24/802.32
  6. Step 6: Final answer
    x = 1,081.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.