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Finding the Fourth Proportional to 262.74, 391.35 and 250.90

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Solution

The fourth proportional to 262.74, 391.35 and 250.90 is: 373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.74 : 391.35 = 250.90 : x
  2. Step 2: Convert to fraction form
    262.74/391.35 = 250.90/x
  3. Step 3: Cross multiply
    262.74x = 391.35 × 250.90
  4. Step 4: Simplify right side
    262.74x = 98,188.27
  5. Step 5: Solve for x
    x = 98,188.27/262.74
  6. Step 6: Final answer
    x = 373.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.