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Finding the Fourth Proportional to 33.34, 45.96 and 30.64

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Solution

The fourth proportional to 33.34, 45.96 and 30.64 is: 42.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.34 : 45.96 = 30.64 : x
  2. Step 2: Convert to fraction form
    33.34/45.96 = 30.64/x
  3. Step 3: Cross multiply
    33.34x = 45.96 × 30.64
  4. Step 4: Simplify right side
    33.34x = 1,408.21
  5. Step 5: Solve for x
    x = 1,408.21/33.34
  6. Step 6: Final answer
    x = 42.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.