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Finding the Fourth Proportional to 320.29, 480.27 and 165.98

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Solution

The fourth proportional to 320.29, 480.27 and 165.98 is: 248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.29 : 480.27 = 165.98 : x
  2. Step 2: Convert to fraction form
    320.29/480.27 = 165.98/x
  3. Step 3: Cross multiply
    320.29x = 480.27 × 165.98
  4. Step 4: Simplify right side
    320.29x = 79,715.21
  5. Step 5: Solve for x
    x = 79,715.21/320.29
  6. Step 6: Final answer
    x = 248.88

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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.