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Finding the Fourth Proportional to 541.12, 746.75 and 308.26

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Solution

The fourth proportional to 541.12, 746.75 and 308.26 is: 425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.12 : 746.75 = 308.26 : x
  2. Step 2: Convert to fraction form
    541.12/746.75 = 308.26/x
  3. Step 3: Cross multiply
    541.12x = 746.75 × 308.26
  4. Step 4: Simplify right side
    541.12x = 230,193.16
  5. Step 5: Solve for x
    x = 230,193.16/541.12
  6. Step 6: Final answer
    x = 425.40

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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.