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Finding the Fourth Proportional to 366.37, 549.21 and 135.20

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Solution

The fourth proportional to 366.37, 549.21 and 135.20 is: 202.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.37 : 549.21 = 135.20 : x
  2. Step 2: Convert to fraction form
    366.37/549.21 = 135.20/x
  3. Step 3: Cross multiply
    366.37x = 549.21 × 135.20
  4. Step 4: Simplify right side
    366.37x = 74,253.53
  5. Step 5: Solve for x
    x = 74,253.53/366.37
  6. Step 6: Final answer
    x = 202.68

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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.