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Finding the Fourth Proportional to 802.67, 1,204.05 and 254.91

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Solution

The fourth proportional to 802.67, 1,204.05 and 254.91 is: 382.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.67 : 1,204.05 = 254.91 : x
  2. Step 2: Convert to fraction form
    802.67/1,204.05 = 254.91/x
  3. Step 3: Cross multiply
    802.67x = 1,204.05 × 254.91
  4. Step 4: Simplify right side
    802.67x = 306,924.39
  5. Step 5: Solve for x
    x = 306,924.39/802.67
  6. Step 6: Final answer
    x = 382.38

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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.