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Finding the Fourth Proportional to 351.68, 529.07 and 214.79

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Solution

The fourth proportional to 351.68, 529.07 and 214.79 is: 323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.68 : 529.07 = 214.79 : x
  2. Step 2: Convert to fraction form
    351.68/529.07 = 214.79/x
  3. Step 3: Cross multiply
    351.68x = 529.07 × 214.79
  4. Step 4: Simplify right side
    351.68x = 113,635.23
  5. Step 5: Solve for x
    x = 113,635.23/351.68
  6. Step 6: Final answer
    x = 323.13

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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.