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Finding the Fourth Proportional to 736.32, 1,008.85 and 727.21

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Solution

The fourth proportional to 736.32, 1,008.85 and 727.21 is: 996.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.32 : 1,008.85 = 727.21 : x
  2. Step 2: Convert to fraction form
    736.32/1,008.85 = 727.21/x
  3. Step 3: Cross multiply
    736.32x = 1,008.85 × 727.21
  4. Step 4: Simplify right side
    736.32x = 733,645.81
  5. Step 5: Solve for x
    x = 733,645.81/736.32
  6. Step 6: Final answer
    x = 996.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.