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Finding the Fourth Proportional to 61.24, 84.44 and 45.67

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Solution

The fourth proportional to 61.24, 84.44 and 45.67 is: 62.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.24 : 84.44 = 45.67 : x
  2. Step 2: Convert to fraction form
    61.24/84.44 = 45.67/x
  3. Step 3: Cross multiply
    61.24x = 84.44 × 45.67
  4. Step 4: Simplify right side
    61.24x = 3,856.65
  5. Step 5: Solve for x
    x = 3,856.65/61.24
  6. Step 6: Final answer
    x = 62.98

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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.