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Finding the Fourth Proportional to 62.72, 94.40 and 50.88

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Solution

The fourth proportional to 62.72, 94.40 and 50.88 is: 76.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.72 : 94.40 = 50.88 : x
  2. Step 2: Convert to fraction form
    62.72/94.40 = 50.88/x
  3. Step 3: Cross multiply
    62.72x = 94.40 × 50.88
  4. Step 4: Simplify right side
    62.72x = 4,803.07
  5. Step 5: Solve for x
    x = 4,803.07/62.72
  6. Step 6: Final answer
    x = 76.58

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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.