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Finding the Fourth Proportional to 540.97, 811.58 and 252.25

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Solution

The fourth proportional to 540.97, 811.58 and 252.25 is: 378.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.97 : 811.58 = 252.25 : x
  2. Step 2: Convert to fraction form
    540.97/811.58 = 252.25/x
  3. Step 3: Cross multiply
    540.97x = 811.58 × 252.25
  4. Step 4: Simplify right side
    540.97x = 204,719.79
  5. Step 5: Solve for x
    x = 204,719.79/540.97
  6. Step 6: Final answer
    x = 378.43

Related Problems

Find fourth proportional to 270.49, 405.79 and 126.13
Half scale
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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.