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Finding the Fourth Proportional to 539.02, 743.55 and 342.49

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Solution

The fourth proportional to 539.02, 743.55 and 342.49 is: 472.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.02 : 743.55 = 342.49 : x
  2. Step 2: Convert to fraction form
    539.02/743.55 = 342.49/x
  3. Step 3: Cross multiply
    539.02x = 743.55 × 342.49
  4. Step 4: Simplify right side
    539.02x = 254,658.44
  5. Step 5: Solve for x
    x = 254,658.44/539.02
  6. Step 6: Final answer
    x = 472.45

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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.