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Finding the Fourth Proportional to 45.28, 68.01 and 39.34

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Solution

The fourth proportional to 45.28, 68.01 and 39.34 is: 59.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.28 : 68.01 = 39.34 : x
  2. Step 2: Convert to fraction form
    45.28/68.01 = 39.34/x
  3. Step 3: Cross multiply
    45.28x = 68.01 × 39.34
  4. Step 4: Simplify right side
    45.28x = 2,675.51
  5. Step 5: Solve for x
    x = 2,675.51/45.28
  6. Step 6: Final answer
    x = 59.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.