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Finding the Fourth Proportional to 802.35, 1,203.48 and 225.21

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Solution

The fourth proportional to 802.35, 1,203.48 and 225.21 is: 337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.35 : 1,203.48 = 225.21 : x
  2. Step 2: Convert to fraction form
    802.35/1,203.48 = 225.21/x
  3. Step 3: Cross multiply
    802.35x = 1,203.48 × 225.21
  4. Step 4: Simplify right side
    802.35x = 271,035.73
  5. Step 5: Solve for x
    x = 271,035.73/802.35
  6. Step 6: Final answer
    x = 337.80

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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.