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Finding the Fourth Proportional to 325.47, 487.03 and 303.74

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Solution

The fourth proportional to 325.47, 487.03 and 303.74 is: 454.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.47 : 487.03 = 303.74 : x
  2. Step 2: Convert to fraction form
    325.47/487.03 = 303.74/x
  3. Step 3: Cross multiply
    325.47x = 487.03 × 303.74
  4. Step 4: Simplify right side
    325.47x = 147,930.49
  5. Step 5: Solve for x
    x = 147,930.49/325.47
  6. Step 6: Final answer
    x = 454.51

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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.