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Finding the Fourth Proportional to 601.90, 901.40 and 327.31

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Solution

The fourth proportional to 601.90, 901.40 and 327.31 is: 490.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.90 : 901.40 = 327.31 : x
  2. Step 2: Convert to fraction form
    601.90/901.40 = 327.31/x
  3. Step 3: Cross multiply
    601.90x = 901.40 × 327.31
  4. Step 4: Simplify right side
    601.90x = 295,033.34
  5. Step 5: Solve for x
    x = 295,033.34/601.90
  6. Step 6: Final answer
    x = 490.17

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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.