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Finding the Fourth Proportional to 964.02, 1,329.26 and 742.48

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Solution

The fourth proportional to 964.02, 1,329.26 and 742.48 is: 1,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.02 : 1,329.26 = 742.48 : x
  2. Step 2: Convert to fraction form
    964.02/1,329.26 = 742.48/x
  3. Step 3: Cross multiply
    964.02x = 1,329.26 × 742.48
  4. Step 4: Simplify right side
    964.02x = 986,948.96
  5. Step 5: Solve for x
    x = 986,948.96/964.02
  6. Step 6: Final answer
    x = 1,023.78

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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.