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Finding the Fourth Proportional to 967.71, 1,441.68 and 921.27

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Solution

The fourth proportional to 967.71, 1,441.68 and 921.27 is: 1,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.71 : 1,441.68 = 921.27 : x
  2. Step 2: Convert to fraction form
    967.71/1,441.68 = 921.27/x
  3. Step 3: Cross multiply
    967.71x = 1,441.68 × 921.27
  4. Step 4: Simplify right side
    967.71x = 1,328,176.53
  5. Step 5: Solve for x
    x = 1,328,176.53/967.71
  6. Step 6: Final answer
    x = 1,372.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.