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Finding the Fourth Proportional to 544.21, 816.41 and 255.64

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Solution

The fourth proportional to 544.21, 816.41 and 255.64 is: 383.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.21 : 816.41 = 255.64 : x
  2. Step 2: Convert to fraction form
    544.21/816.41 = 255.64/x
  3. Step 3: Cross multiply
    544.21x = 816.41 × 255.64
  4. Step 4: Simplify right side
    544.21x = 208,707.05
  5. Step 5: Solve for x
    x = 208,707.05/544.21
  6. Step 6: Final answer
    x = 383.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.