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Finding the Fourth Proportional to 45.79, 68.44 and 34.94

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Solution

The fourth proportional to 45.79, 68.44 and 34.94 is: 52.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.79 : 68.44 = 34.94 : x
  2. Step 2: Convert to fraction form
    45.79/68.44 = 34.94/x
  3. Step 3: Cross multiply
    45.79x = 68.44 × 34.94
  4. Step 4: Simplify right side
    45.79x = 2,391.29
  5. Step 5: Solve for x
    x = 2,391.29/45.79
  6. Step 6: Final answer
    x = 52.22

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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.