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Finding the Fourth Proportional to 270.74, 373.22 and 187.71

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Solution

The fourth proportional to 270.74, 373.22 and 187.71 is: 258.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.74 : 373.22 = 187.71 : x
  2. Step 2: Convert to fraction form
    270.74/373.22 = 187.71/x
  3. Step 3: Cross multiply
    270.74x = 373.22 × 187.71
  4. Step 4: Simplify right side
    270.74x = 70,056.19
  5. Step 5: Solve for x
    x = 70,056.19/270.74
  6. Step 6: Final answer
    x = 258.76

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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.