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Finding the Fourth Proportional to 62.21, 92.95 and 47.49

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Solution

The fourth proportional to 62.21, 92.95 and 47.49 is: 70.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.21 : 92.95 = 47.49 : x
  2. Step 2: Convert to fraction form
    62.21/92.95 = 47.49/x
  3. Step 3: Cross multiply
    62.21x = 92.95 × 47.49
  4. Step 4: Simplify right side
    62.21x = 4,413.91
  5. Step 5: Solve for x
    x = 4,413.91/62.21
  6. Step 6: Final answer
    x = 70.95

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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.