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Finding the Fourth Proportional to 403.49, 606.63 and 282.26

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Solution

The fourth proportional to 403.49, 606.63 and 282.26 is: 424.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.49 : 606.63 = 282.26 : x
  2. Step 2: Convert to fraction form
    403.49/606.63 = 282.26/x
  3. Step 3: Cross multiply
    403.49x = 606.63 × 282.26
  4. Step 4: Simplify right side
    403.49x = 171,227.38
  5. Step 5: Solve for x
    x = 171,227.38/403.49
  6. Step 6: Final answer
    x = 424.37

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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.