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Finding the Fourth Proportional to 270.78, 373.67 and 152.73

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Solution

The fourth proportional to 270.78, 373.67 and 152.73 is: 210.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.78 : 373.67 = 152.73 : x
  2. Step 2: Convert to fraction form
    270.78/373.67 = 152.73/x
  3. Step 3: Cross multiply
    270.78x = 373.67 × 152.73
  4. Step 4: Simplify right side
    270.78x = 57,069.86
  5. Step 5: Solve for x
    x = 57,069.86/270.78
  6. Step 6: Final answer
    x = 210.76

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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.