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Finding the Fourth Proportional to 850.35, 1,274.59 and 556.92

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Solution

The fourth proportional to 850.35, 1,274.59 and 556.92 is: 834.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.35 : 1,274.59 = 556.92 : x
  2. Step 2: Convert to fraction form
    850.35/1,274.59 = 556.92/x
  3. Step 3: Cross multiply
    850.35x = 1,274.59 × 556.92
  4. Step 4: Simplify right side
    850.35x = 709,844.66
  5. Step 5: Solve for x
    x = 709,844.66/850.35
  6. Step 6: Final answer
    x = 834.77

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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.