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Finding the Fourth Proportional to 325.90, 487.62 and 245.08

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Solution

The fourth proportional to 325.90, 487.62 and 245.08 is: 366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.90 : 487.62 = 245.08 : x
  2. Step 2: Convert to fraction form
    325.90/487.62 = 245.08/x
  3. Step 3: Cross multiply
    325.90x = 487.62 × 245.08
  4. Step 4: Simplify right side
    325.90x = 119,505.91
  5. Step 5: Solve for x
    x = 119,505.91/325.90
  6. Step 6: Final answer
    x = 366.70

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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.