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Finding the Fourth Proportional to 273, 409.18 and 151.20

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Solution

The fourth proportional to 273, 409.18 and 151.20 is: 226.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    273 : 409.18 = 151.20 : x
  2. Step 2: Convert to fraction form
    273/409.18 = 151.20/x
  3. Step 3: Cross multiply
    273x = 409.18 × 151.20
  4. Step 4: Simplify right side
    273x = 61,868.02
  5. Step 5: Solve for x
    x = 61,868.02/273
  6. Step 6: Final answer
    x = 226.62

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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.