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Finding the Fourth Proportional to 875.29, 1,312.89 and 226

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Solution

The fourth proportional to 875.29, 1,312.89 and 226 is: 338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.29 : 1,312.89 = 226 : x
  2. Step 2: Convert to fraction form
    875.29/1,312.89 = 226/x
  3. Step 3: Cross multiply
    875.29x = 1,312.89 × 226
  4. Step 4: Simplify right side
    875.29x = 296,713.14
  5. Step 5: Solve for x
    x = 296,713.14/875.29
  6. Step 6: Final answer
    x = 338.99

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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.