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Finding the Fourth Proportional to 544.16, 815.40 and 255.26

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Solution

The fourth proportional to 544.16, 815.40 and 255.26 is: 382.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.16 : 815.40 = 255.26 : x
  2. Step 2: Convert to fraction form
    544.16/815.40 = 255.26/x
  3. Step 3: Cross multiply
    544.16x = 815.40 × 255.26
  4. Step 4: Simplify right side
    544.16x = 208,139.00
  5. Step 5: Solve for x
    x = 208,139.00/544.16
  6. Step 6: Final answer
    x = 382.50

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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.