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Finding the Fourth Proportional to 541.05, 746.31 and 393.22

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Solution

The fourth proportional to 541.05, 746.31 and 393.22 is: 542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.05 : 746.31 = 393.22 : x
  2. Step 2: Convert to fraction form
    541.05/746.31 = 393.22/x
  3. Step 3: Cross multiply
    541.05x = 746.31 × 393.22
  4. Step 4: Simplify right side
    541.05x = 293,464.02
  5. Step 5: Solve for x
    x = 293,464.02/541.05
  6. Step 6: Final answer
    x = 542.40

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.