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Finding the Fourth Proportional to 60.94, 91.75 and 47.49

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Solution

The fourth proportional to 60.94, 91.75 and 47.49 is: 71.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.94 : 91.75 = 47.49 : x
  2. Step 2: Convert to fraction form
    60.94/91.75 = 47.49/x
  3. Step 3: Cross multiply
    60.94x = 91.75 × 47.49
  4. Step 4: Simplify right side
    60.94x = 4,357.21
  5. Step 5: Solve for x
    x = 4,357.21/60.94
  6. Step 6: Final answer
    x = 71.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.