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Finding the Fourth Proportional to 347.48, 479.51 and 196.07

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Solution

The fourth proportional to 347.48, 479.51 and 196.07 is: 270.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.48 : 479.51 = 196.07 : x
  2. Step 2: Convert to fraction form
    347.48/479.51 = 196.07/x
  3. Step 3: Cross multiply
    347.48x = 479.51 × 196.07
  4. Step 4: Simplify right side
    347.48x = 94,019.21
  5. Step 5: Solve for x
    x = 94,019.21/347.48
  6. Step 6: Final answer
    x = 270.58

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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.