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Finding the Fourth Proportional to 850.17, 1,274.35 and 484.17

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Solution

The fourth proportional to 850.17, 1,274.35 and 484.17 is: 725.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.17 : 1,274.35 = 484.17 : x
  2. Step 2: Convert to fraction form
    850.17/1,274.35 = 484.17/x
  3. Step 3: Cross multiply
    850.17x = 1,274.35 × 484.17
  4. Step 4: Simplify right side
    850.17x = 617,001.74
  5. Step 5: Solve for x
    x = 617,001.74/850.17
  6. Step 6: Final answer
    x = 725.74

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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.