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Finding the Fourth Proportional to 50.72, 76.44 and 48.04

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Solution

The fourth proportional to 50.72, 76.44 and 48.04 is: 72.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.72 : 76.44 = 48.04 : x
  2. Step 2: Convert to fraction form
    50.72/76.44 = 48.04/x
  3. Step 3: Cross multiply
    50.72x = 76.44 × 48.04
  4. Step 4: Simplify right side
    50.72x = 3,672.18
  5. Step 5: Solve for x
    x = 3,672.18/50.72
  6. Step 6: Final answer
    x = 72.40

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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.