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Finding the Fourth Proportional to 409.88, 565.56 and 235.18

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Solution

The fourth proportional to 409.88, 565.56 and 235.18 is: 324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.88 : 565.56 = 235.18 : x
  2. Step 2: Convert to fraction form
    409.88/565.56 = 235.18/x
  3. Step 3: Cross multiply
    409.88x = 565.56 × 235.18
  4. Step 4: Simplify right side
    409.88x = 133,008.40
  5. Step 5: Solve for x
    x = 133,008.40/409.88
  6. Step 6: Final answer
    x = 324.51

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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.