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Finding the Fourth Proportional to 308.21, 461.60 and 303.18

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Solution

The fourth proportional to 308.21, 461.60 and 303.18 is: 454.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.21 : 461.60 = 303.18 : x
  2. Step 2: Convert to fraction form
    308.21/461.60 = 303.18/x
  3. Step 3: Cross multiply
    308.21x = 461.60 × 303.18
  4. Step 4: Simplify right side
    308.21x = 139,945.78
  5. Step 5: Solve for x
    x = 139,945.78/308.21
  6. Step 6: Final answer
    x = 454.07

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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.