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Finding the Fourth Proportional to 541.10, 746.64 and 308.22

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Solution

The fourth proportional to 541.10, 746.64 and 308.22 is: 425.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.10 : 746.64 = 308.22 : x
  2. Step 2: Convert to fraction form
    541.10/746.64 = 308.22/x
  3. Step 3: Cross multiply
    541.10x = 746.64 × 308.22
  4. Step 4: Simplify right side
    541.10x = 230,129.38
  5. Step 5: Solve for x
    x = 230,129.38/541.10
  6. Step 6: Final answer
    x = 425.30

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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.