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Finding the Fourth Proportional to 366.50, 548.85 and 212.10

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Solution

The fourth proportional to 366.50, 548.85 and 212.10 is: 317.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.50 : 548.85 = 212.10 : x
  2. Step 2: Convert to fraction form
    366.50/548.85 = 212.10/x
  3. Step 3: Cross multiply
    366.50x = 548.85 × 212.10
  4. Step 4: Simplify right side
    366.50x = 116,411.09
  5. Step 5: Solve for x
    x = 116,411.09/366.50
  6. Step 6: Final answer
    x = 317.63

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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.