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Finding the Fourth Proportional to 297.41, 446.40 and 143.42

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Solution

The fourth proportional to 297.41, 446.40 and 143.42 is: 215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.41 : 446.40 = 143.42 : x
  2. Step 2: Convert to fraction form
    297.41/446.40 = 143.42/x
  3. Step 3: Cross multiply
    297.41x = 446.40 × 143.42
  4. Step 4: Simplify right side
    297.41x = 64,020.46
  5. Step 5: Solve for x
    x = 64,020.46/297.41
  6. Step 6: Final answer
    x = 215.26

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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.