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Finding the Fourth Proportional to 541.38, 747.06 and 320.34

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Solution

The fourth proportional to 541.38, 747.06 and 320.34 is: 442.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.38 : 747.06 = 320.34 : x
  2. Step 2: Convert to fraction form
    541.38/747.06 = 320.34/x
  3. Step 3: Cross multiply
    541.38x = 747.06 × 320.34
  4. Step 4: Simplify right side
    541.38x = 239,313.20
  5. Step 5: Solve for x
    x = 239,313.20/541.38
  6. Step 6: Final answer
    x = 442.04

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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.