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Finding the Fourth Proportional to 347.53, 521.26 and 191.65

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Solution

The fourth proportional to 347.53, 521.26 and 191.65 is: 287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.53 : 521.26 = 191.65 : x
  2. Step 2: Convert to fraction form
    347.53/521.26 = 191.65/x
  3. Step 3: Cross multiply
    347.53x = 521.26 × 191.65
  4. Step 4: Simplify right side
    347.53x = 99,902.22
  5. Step 5: Solve for x
    x = 99,902.22/347.53
  6. Step 6: Final answer
    x = 287.47

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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.