Home / 850.13-1,274.27-439.15

Finding the Fourth Proportional to 850.13, 1,274.27 and 439.15

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Solution

The fourth proportional to 850.13, 1,274.27 and 439.15 is: 658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.13 : 1,274.27 = 439.15 : x
  2. Step 2: Convert to fraction form
    850.13/1,274.27 = 439.15/x
  3. Step 3: Cross multiply
    850.13x = 1,274.27 × 439.15
  4. Step 4: Simplify right side
    850.13x = 559,595.67
  5. Step 5: Solve for x
    x = 559,595.67/850.13
  6. Step 6: Final answer
    x = 658.25

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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.