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Finding the Fourth Proportional to 541.05, 811.44 and 345.75

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Solution

The fourth proportional to 541.05, 811.44 and 345.75 is: 518.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.05 : 811.44 = 345.75 : x
  2. Step 2: Convert to fraction form
    541.05/811.44 = 345.75/x
  3. Step 3: Cross multiply
    541.05x = 811.44 × 345.75
  4. Step 4: Simplify right side
    541.05x = 280,555.38
  5. Step 5: Solve for x
    x = 280,555.38/541.05
  6. Step 6: Final answer
    x = 518.54

Related Problems

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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.