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Finding the Fourth Proportional to 255.07, 380.78 and 246.50

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Solution

The fourth proportional to 255.07, 380.78 and 246.50 is: 367.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.07 : 380.78 = 246.50 : x
  2. Step 2: Convert to fraction form
    255.07/380.78 = 246.50/x
  3. Step 3: Cross multiply
    255.07x = 380.78 × 246.50
  4. Step 4: Simplify right side
    255.07x = 93,862.27
  5. Step 5: Solve for x
    x = 93,862.27/255.07
  6. Step 6: Final answer
    x = 367.99

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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.