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Finding the Fourth Proportional to 327.52, 491.37 and 291.70

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Solution

The fourth proportional to 327.52, 491.37 and 291.70 is: 437.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.52 : 491.37 = 291.70 : x
  2. Step 2: Convert to fraction form
    327.52/491.37 = 291.70/x
  3. Step 3: Cross multiply
    327.52x = 491.37 × 291.70
  4. Step 4: Simplify right side
    327.52x = 143,332.63
  5. Step 5: Solve for x
    x = 143,332.63/327.52
  6. Step 6: Final answer
    x = 437.63

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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.