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Finding the Fourth Proportional to 62.22, 92.95 and 53.11

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Solution

The fourth proportional to 62.22, 92.95 and 53.11 is: 79.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.22 : 92.95 = 53.11 : x
  2. Step 2: Convert to fraction form
    62.22/92.95 = 53.11/x
  3. Step 3: Cross multiply
    62.22x = 92.95 × 53.11
  4. Step 4: Simplify right side
    62.22x = 4,936.57
  5. Step 5: Solve for x
    x = 4,936.57/62.22
  6. Step 6: Final answer
    x = 79.34

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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.