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Finding the Fourth Proportional to 850.88, 1,174.13 and 477.74

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Solution

The fourth proportional to 850.88, 1,174.13 and 477.74 is: 659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.88 : 1,174.13 = 477.74 : x
  2. Step 2: Convert to fraction form
    850.88/1,174.13 = 477.74/x
  3. Step 3: Cross multiply
    850.88x = 1,174.13 × 477.74
  4. Step 4: Simplify right side
    850.88x = 560,928.87
  5. Step 5: Solve for x
    x = 560,928.87/850.88
  6. Step 6: Final answer
    x = 659.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.