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Finding the Fourth Proportional to 297.56, 446.48 and 143.46

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Solution

The fourth proportional to 297.56, 446.48 and 143.46 is: 215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.56 : 446.48 = 143.46 : x
  2. Step 2: Convert to fraction form
    297.56/446.48 = 143.46/x
  3. Step 3: Cross multiply
    297.56x = 446.48 × 143.46
  4. Step 4: Simplify right side
    297.56x = 64,051.84
  5. Step 5: Solve for x
    x = 64,051.84/297.56
  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.