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Finding the Fourth Proportional to 45.85, 68.74 and 14.99

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Solution

The fourth proportional to 45.85, 68.74 and 14.99 is: 22.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.85 : 68.74 = 14.99 : x
  2. Step 2: Convert to fraction form
    45.85/68.74 = 14.99/x
  3. Step 3: Cross multiply
    45.85x = 68.74 × 14.99
  4. Step 4: Simplify right side
    45.85x = 1,030.54
  5. Step 5: Solve for x
    x = 1,030.54/45.85
  6. Step 6: Final answer
    x = 22.48

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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.