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Finding the Fourth Proportional to 62.20, 84.06 and 62.20

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Solution

The fourth proportional to 62.20, 84.06 and 62.20 is: 84.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.20 : 84.06 = 62.20 : x
  2. Step 2: Convert to fraction form
    62.20/84.06 = 62.20/x
  3. Step 3: Cross multiply
    62.20x = 84.06 × 62.20
  4. Step 4: Simplify right side
    62.20x = 5,228.53
  5. Step 5: Solve for x
    x = 5,228.53/62.20
  6. Step 6: Final answer
    x = 84.06

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.