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Finding the Fourth Proportional to 540.78, 746.06 and 344.22

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Solution

The fourth proportional to 540.78, 746.06 and 344.22 is: 474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.78 : 746.06 = 344.22 : x
  2. Step 2: Convert to fraction form
    540.78/746.06 = 344.22/x
  3. Step 3: Cross multiply
    540.78x = 746.06 × 344.22
  4. Step 4: Simplify right side
    540.78x = 256,807.05
  5. Step 5: Solve for x
    x = 256,807.05/540.78
  6. Step 6: Final answer
    x = 474.88

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Double scale
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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.