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Finding the Fourth Proportional to 74.52, 112.19 and 50.63

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Solution

The fourth proportional to 74.52, 112.19 and 50.63 is: 76.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.52 : 112.19 = 50.63 : x
  2. Step 2: Convert to fraction form
    74.52/112.19 = 50.63/x
  3. Step 3: Cross multiply
    74.52x = 112.19 × 50.63
  4. Step 4: Simplify right side
    74.52x = 5,679.37
  5. Step 5: Solve for x
    x = 5,679.37/74.52
  6. Step 6: Final answer
    x = 76.21

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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.