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Finding the Fourth Proportional to 850.65, 1,173.83 and 477.60

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Solution

The fourth proportional to 850.65, 1,173.83 and 477.60 is: 659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.65 : 1,173.83 = 477.60 : x
  2. Step 2: Convert to fraction form
    850.65/1,173.83 = 477.60/x
  3. Step 3: Cross multiply
    850.65x = 1,173.83 × 477.60
  4. Step 4: Simplify right side
    850.65x = 560,618.82
  5. Step 5: Solve for x
    x = 560,618.82/850.65
  6. Step 6: Final answer
    x = 659.05

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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.