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Finding the Fourth Proportional to 542.21, 748.04 and 332.28

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Solution

The fourth proportional to 542.21, 748.04 and 332.28 is: 458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.21 : 748.04 = 332.28 : x
  2. Step 2: Convert to fraction form
    542.21/748.04 = 332.28/x
  3. Step 3: Cross multiply
    542.21x = 748.04 × 332.28
  4. Step 4: Simplify right side
    542.21x = 248,557.07
  5. Step 5: Solve for x
    x = 248,557.07/542.21
  6. Step 6: Final answer
    x = 458.42

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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.