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Finding the Fourth Proportional to 802.28, 1,203.41 and 225.15

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Solution

The fourth proportional to 802.28, 1,203.41 and 225.15 is: 337.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.28 : 1,203.41 = 225.15 : x
  2. Step 2: Convert to fraction form
    802.28/1,203.41 = 225.15/x
  3. Step 3: Cross multiply
    802.28x = 1,203.41 × 225.15
  4. Step 4: Simplify right side
    802.28x = 270,946.64
  5. Step 5: Solve for x
    x = 270,946.64/802.28
  6. Step 6: Final answer
    x = 337.72

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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.