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Finding the Fourth Proportional to 871.63, 1,202.81 and 473.27

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Solution

The fourth proportional to 871.63, 1,202.81 and 473.27 is: 653.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    871.63 : 1,202.81 = 473.27 : x
  2. Step 2: Convert to fraction form
    871.63/1,202.81 = 473.27/x
  3. Step 3: Cross multiply
    871.63x = 1,202.81 × 473.27
  4. Step 4: Simplify right side
    871.63x = 569,253.89
  5. Step 5: Solve for x
    x = 569,253.89/871.63
  6. Step 6: Final answer
    x = 653.09

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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.