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Finding the Fourth Proportional to 300.70, 450.65 and 154.32

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Solution

The fourth proportional to 300.70, 450.65 and 154.32 is: 231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.70 : 450.65 = 154.32 : x
  2. Step 2: Convert to fraction form
    300.70/450.65 = 154.32/x
  3. Step 3: Cross multiply
    300.70x = 450.65 × 154.32
  4. Step 4: Simplify right side
    300.70x = 69,545.43
  5. Step 5: Solve for x
    x = 69,545.43/300.70
  6. Step 6: Final answer
    x = 231.28

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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.