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Finding the Fourth Proportional to 297.56, 409.27 and 260.66

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Solution

The fourth proportional to 297.56, 409.27 and 260.66 is: 358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.56 : 409.27 = 260.66 : x
  2. Step 2: Convert to fraction form
    297.56/409.27 = 260.66/x
  3. Step 3: Cross multiply
    297.56x = 409.27 × 260.66
  4. Step 4: Simplify right side
    297.56x = 106,678.88
  5. Step 5: Solve for x
    x = 106,678.88/297.56
  6. Step 6: Final answer
    x = 358.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.