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Finding the Fourth Proportional to 347.49, 479.24 and 235.25

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Solution

The fourth proportional to 347.49, 479.24 and 235.25 is: 324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.49 : 479.24 = 235.25 : x
  2. Step 2: Convert to fraction form
    347.49/479.24 = 235.25/x
  3. Step 3: Cross multiply
    347.49x = 479.24 × 235.25
  4. Step 4: Simplify right side
    347.49x = 112,743.67
  5. Step 5: Solve for x
    x = 112,743.67/347.49
  6. Step 6: Final answer
    x = 324.45

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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.