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Finding the Fourth Proportional to 962.20, 1,344.20 and 962.20

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Solution

The fourth proportional to 962.20, 1,344.20 and 962.20 is: 1,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.20 : 1,344.20 = 962.20 : x
  2. Step 2: Convert to fraction form
    962.20/1,344.20 = 962.20/x
  3. Step 3: Cross multiply
    962.20x = 1,344.20 × 962.20
  4. Step 4: Simplify right side
    962.20x = 1,293,389.24
  5. Step 5: Solve for x
    x = 1,293,389.24/962.20
  6. Step 6: Final answer
    x = 1,344.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.