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Finding the Fourth Proportional to 45.45, 68.03 and 25.17

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Solution

The fourth proportional to 45.45, 68.03 and 25.17 is: 37.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.45 : 68.03 = 25.17 : x
  2. Step 2: Convert to fraction form
    45.45/68.03 = 25.17/x
  3. Step 3: Cross multiply
    45.45x = 68.03 × 25.17
  4. Step 4: Simplify right side
    45.45x = 1,712.19
  5. Step 5: Solve for x
    x = 1,712.19/45.45
  6. Step 6: Final answer
    x = 37.67

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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.