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Finding the Fourth Proportional to 354.94, 531.51 and 239.26

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Solution

The fourth proportional to 354.94, 531.51 and 239.26 is: 358.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.94 : 531.51 = 239.26 : x
  2. Step 2: Convert to fraction form
    354.94/531.51 = 239.26/x
  3. Step 3: Cross multiply
    354.94x = 531.51 × 239.26
  4. Step 4: Simplify right side
    354.94x = 127,169.08
  5. Step 5: Solve for x
    x = 127,169.08/354.94
  6. Step 6: Final answer
    x = 358.28

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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.