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Finding the Fourth Proportional to 852.70, 1,176.42 and 632.02

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Solution

The fourth proportional to 852.70, 1,176.42 and 632.02 is: 871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.70 : 1,176.42 = 632.02 : x
  2. Step 2: Convert to fraction form
    852.70/1,176.42 = 632.02/x
  3. Step 3: Cross multiply
    852.70x = 1,176.42 × 632.02
  4. Step 4: Simplify right side
    852.70x = 743,520.97
  5. Step 5: Solve for x
    x = 743,520.97/852.70
  6. Step 6: Final answer
    x = 871.96

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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.