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Finding the Fourth Proportional to 409.07, 610.01 and 405.42

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Solution

The fourth proportional to 409.07, 610.01 and 405.42 is: 604.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.07 : 610.01 = 405.42 : x
  2. Step 2: Convert to fraction form
    409.07/610.01 = 405.42/x
  3. Step 3: Cross multiply
    409.07x = 610.01 × 405.42
  4. Step 4: Simplify right side
    409.07x = 247,308.23
  5. Step 5: Solve for x
    x = 247,308.23/409.07
  6. Step 6: Final answer
    x = 604.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.