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Finding the Fourth Proportional to 967.52, 1,441.20 and 954.80

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Solution

The fourth proportional to 967.52, 1,441.20 and 954.80 is: 1,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.52 : 1,441.20 = 954.80 : x
  2. Step 2: Convert to fraction form
    967.52/1,441.20 = 954.80/x
  3. Step 3: Cross multiply
    967.52x = 1,441.20 × 954.80
  4. Step 4: Simplify right side
    967.52x = 1,376,057.76
  5. Step 5: Solve for x
    x = 1,376,057.76/967.52
  6. Step 6: Final answer
    x = 1,422.25

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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.