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Finding the Fourth Proportional to 50.22, 74.96 and 43.32

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Solution

The fourth proportional to 50.22, 74.96 and 43.32 is: 64.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.22 : 74.96 = 43.32 : x
  2. Step 2: Convert to fraction form
    50.22/74.96 = 43.32/x
  3. Step 3: Cross multiply
    50.22x = 74.96 × 43.32
  4. Step 4: Simplify right side
    50.22x = 3,247.27
  5. Step 5: Solve for x
    x = 3,247.27/50.22
  6. Step 6: Final answer
    x = 64.66

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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.