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Finding the Fourth Proportional to 300.21, 414.05 and 230.18

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Solution

The fourth proportional to 300.21, 414.05 and 230.18 is: 317.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.21 : 414.05 = 230.18 : x
  2. Step 2: Convert to fraction form
    300.21/414.05 = 230.18/x
  3. Step 3: Cross multiply
    300.21x = 414.05 × 230.18
  4. Step 4: Simplify right side
    300.21x = 95,302.81
  5. Step 5: Solve for x
    x = 95,302.81/300.21
  6. Step 6: Final answer
    x = 317.46

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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.