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Finding the Fourth Proportional to 446.14, 668.45 and 398.49

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Solution

The fourth proportional to 446.14, 668.45 and 398.49 is: 597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.14 : 668.45 = 398.49 : x
  2. Step 2: Convert to fraction form
    446.14/668.45 = 398.49/x
  3. Step 3: Cross multiply
    446.14x = 668.45 × 398.49
  4. Step 4: Simplify right side
    446.14x = 266,369.13
  5. Step 5: Solve for x
    x = 266,369.13/446.14
  6. Step 6: Final answer
    x = 597.05

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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.