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Finding the Fourth Proportional to 901.31, 1,351.97 and 353.65

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Solution

The fourth proportional to 901.31, 1,351.97 and 353.65 is: 530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.31 : 1,351.97 = 353.65 : x
  2. Step 2: Convert to fraction form
    901.31/1,351.97 = 353.65/x
  3. Step 3: Cross multiply
    901.31x = 1,351.97 × 353.65
  4. Step 4: Simplify right side
    901.31x = 478,123.84
  5. Step 5: Solve for x
    x = 478,123.84/901.31
  6. Step 6: Final answer
    x = 530.48

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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.