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Finding the Fourth Proportional to 270.66, 373.38 and 154.20

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Solution

The fourth proportional to 270.66, 373.38 and 154.20 is: 212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.66 : 373.38 = 154.20 : x
  2. Step 2: Convert to fraction form
    270.66/373.38 = 154.20/x
  3. Step 3: Cross multiply
    270.66x = 373.38 × 154.20
  4. Step 4: Simplify right side
    270.66x = 57,575.20
  5. Step 5: Solve for x
    x = 57,575.20/270.66
  6. Step 6: Final answer
    x = 212.72

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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.