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Finding the Fourth Proportional to 325.47, 449.16 and 303.60

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Solution

The fourth proportional to 325.47, 449.16 and 303.60 is: 418.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.47 : 449.16 = 303.60 : x
  2. Step 2: Convert to fraction form
    325.47/449.16 = 303.60/x
  3. Step 3: Cross multiply
    325.47x = 449.16 × 303.60
  4. Step 4: Simplify right side
    325.47x = 136,364.98
  5. Step 5: Solve for x
    x = 136,364.98/325.47
  6. Step 6: Final answer
    x = 418.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.