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Finding the Fourth Proportional to 297.40, 446.10 and 277.15

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Solution

The fourth proportional to 297.40, 446.10 and 277.15 is: 415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.40 : 446.10 = 277.15 : x
  2. Step 2: Convert to fraction form
    297.40/446.10 = 277.15/x
  3. Step 3: Cross multiply
    297.40x = 446.10 × 277.15
  4. Step 4: Simplify right side
    297.40x = 123,636.62
  5. Step 5: Solve for x
    x = 123,636.62/297.40
  6. Step 6: Final answer
    x = 415.73

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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.