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Finding the Fourth Proportional to 297.13, 444.61 and 261.49

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Solution

The fourth proportional to 297.13, 444.61 and 261.49 is: 391.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.13 : 444.61 = 261.49 : x
  2. Step 2: Convert to fraction form
    297.13/444.61 = 261.49/x
  3. Step 3: Cross multiply
    297.13x = 444.61 × 261.49
  4. Step 4: Simplify right side
    297.13x = 116,261.07
  5. Step 5: Solve for x
    x = 116,261.07/297.13
  6. Step 6: Final answer
    x = 391.28

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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.