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Finding the Fourth Proportional to 264.82, 399.22 and 247.21

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Solution

The fourth proportional to 264.82, 399.22 and 247.21 is: 372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.82 : 399.22 = 247.21 : x
  2. Step 2: Convert to fraction form
    264.82/399.22 = 247.21/x
  3. Step 3: Cross multiply
    264.82x = 399.22 × 247.21
  4. Step 4: Simplify right side
    264.82x = 98,691.18
  5. Step 5: Solve for x
    x = 98,691.18/264.82
  6. Step 6: Final answer
    x = 372.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.