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Finding the Fourth Proportional to 62.45, 86 and 62.26

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Solution

The fourth proportional to 62.45, 86 and 62.26 is: 85.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.45 : 86 = 62.26 : x
  2. Step 2: Convert to fraction form
    62.45/86 = 62.26/x
  3. Step 3: Cross multiply
    62.45x = 86 × 62.26
  4. Step 4: Simplify right side
    62.45x = 5,354.36
  5. Step 5: Solve for x
    x = 5,354.36/62.45
  6. Step 6: Final answer
    x = 85.74

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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.