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Finding the Fourth Proportional to 450.24, 675.36 and 161.68

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Solution

The fourth proportional to 450.24, 675.36 and 161.68 is: 242.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.24 : 675.36 = 161.68 : x
  2. Step 2: Convert to fraction form
    450.24/675.36 = 161.68/x
  3. Step 3: Cross multiply
    450.24x = 675.36 × 161.68
  4. Step 4: Simplify right side
    450.24x = 109,192.20
  5. Step 5: Solve for x
    x = 109,192.20/450.24
  6. Step 6: Final answer
    x = 242.52

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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.