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Finding the Fourth Proportional to 542.88, 748.80 and 346.05

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Solution

The fourth proportional to 542.88, 748.80 and 346.05 is: 477.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.88 : 748.80 = 346.05 : x
  2. Step 2: Convert to fraction form
    542.88/748.80 = 346.05/x
  3. Step 3: Cross multiply
    542.88x = 748.80 × 346.05
  4. Step 4: Simplify right side
    542.88x = 259,122.24
  5. Step 5: Solve for x
    x = 259,122.24/542.88
  6. Step 6: Final answer
    x = 477.31

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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.