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Finding the Fourth Proportional to 50.61, 76.23 and 43.47

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Solution

The fourth proportional to 50.61, 76.23 and 43.47 is: 65.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.61 : 76.23 = 43.47 : x
  2. Step 2: Convert to fraction form
    50.61/76.23 = 43.47/x
  3. Step 3: Cross multiply
    50.61x = 76.23 × 43.47
  4. Step 4: Simplify right side
    50.61x = 3,313.72
  5. Step 5: Solve for x
    x = 3,313.72/50.61
  6. Step 6: Final answer
    x = 65.48

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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.