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Finding the Fourth Proportional to 277.86, 414.60 and 256.32

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Solution

The fourth proportional to 277.86, 414.60 and 256.32 is: 382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.86 : 414.60 = 256.32 : x
  2. Step 2: Convert to fraction form
    277.86/414.60 = 256.32/x
  3. Step 3: Cross multiply
    277.86x = 414.60 × 256.32
  4. Step 4: Simplify right side
    277.86x = 106,270.27
  5. Step 5: Solve for x
    x = 106,270.27/277.86
  6. Step 6: Final answer
    x = 382.46

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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.