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Finding the Fourth Proportional to 873.96, 1,316.92 and 723.27

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Solution

The fourth proportional to 873.96, 1,316.92 and 723.27 is: 1,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.96 : 1,316.92 = 723.27 : x
  2. Step 2: Convert to fraction form
    873.96/1,316.92 = 723.27/x
  3. Step 3: Cross multiply
    873.96x = 1,316.92 × 723.27
  4. Step 4: Simplify right side
    873.96x = 952,488.73
  5. Step 5: Solve for x
    x = 952,488.73/873.96
  6. Step 6: Final answer
    x = 1,089.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.