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Finding the Fourth Proportional to 50.72, 75.66 and 49.32

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Solution

The fourth proportional to 50.72, 75.66 and 49.32 is: 73.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.72 : 75.66 = 49.32 : x
  2. Step 2: Convert to fraction form
    50.72/75.66 = 49.32/x
  3. Step 3: Cross multiply
    50.72x = 75.66 × 49.32
  4. Step 4: Simplify right side
    50.72x = 3,732.02
  5. Step 5: Solve for x
    x = 3,732.02/50.72
  6. Step 6: Final answer
    x = 73.58

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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.