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Finding the Fourth Proportional to 345.43, 517.87 and 236.89

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Solution

The fourth proportional to 345.43, 517.87 and 236.89 is: 355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.43 : 517.87 = 236.89 : x
  2. Step 2: Convert to fraction form
    345.43/517.87 = 236.89/x
  3. Step 3: Cross multiply
    345.43x = 517.87 × 236.89
  4. Step 4: Simplify right side
    345.43x = 122,674.45
  5. Step 5: Solve for x
    x = 122,674.45/345.43
  6. Step 6: Final answer
    x = 355.14

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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.