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Finding the Fourth Proportional to 345.27, 517.42 and 191.01

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Solution

The fourth proportional to 345.27, 517.42 and 191.01 is: 286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.27 : 517.42 = 191.01 : x
  2. Step 2: Convert to fraction form
    345.27/517.42 = 191.01/x
  3. Step 3: Cross multiply
    345.27x = 517.42 × 191.01
  4. Step 4: Simplify right side
    345.27x = 98,832.39
  5. Step 5: Solve for x
    x = 98,832.39/345.27
  6. Step 6: Final answer
    x = 286.25

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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.