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Finding the Fourth Proportional to 366.55, 549.10 and 212.09

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Solution

The fourth proportional to 366.55, 549.10 and 212.09 is: 317.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.55 : 549.10 = 212.09 : x
  2. Step 2: Convert to fraction form
    366.55/549.10 = 212.09/x
  3. Step 3: Cross multiply
    366.55x = 549.10 × 212.09
  4. Step 4: Simplify right side
    366.55x = 116,461.37
  5. Step 5: Solve for x
    x = 116,461.37/366.55
  6. Step 6: Final answer
    x = 317.72

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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.