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Finding the Fourth Proportional to 336.48, 464.28 and 212.20

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Solution

The fourth proportional to 336.48, 464.28 and 212.20 is: 292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.48 : 464.28 = 212.20 : x
  2. Step 2: Convert to fraction form
    336.48/464.28 = 212.20/x
  3. Step 3: Cross multiply
    336.48x = 464.28 × 212.20
  4. Step 4: Simplify right side
    336.48x = 98,520.22
  5. Step 5: Solve for x
    x = 98,520.22/336.48
  6. Step 6: Final answer
    x = 292.80

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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.