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Finding the Fourth Proportional to 297.19, 409.27 and 291.07

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Solution

The fourth proportional to 297.19, 409.27 and 291.07 is: 400.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.19 : 409.27 = 291.07 : x
  2. Step 2: Convert to fraction form
    297.19/409.27 = 291.07/x
  3. Step 3: Cross multiply
    297.19x = 409.27 × 291.07
  4. Step 4: Simplify right side
    297.19x = 119,126.22
  5. Step 5: Solve for x
    x = 119,126.22/297.19
  6. Step 6: Final answer
    x = 400.84

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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.