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Finding the Fourth Proportional to 362.34, 542.90 and 208.44

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Solution

The fourth proportional to 362.34, 542.90 and 208.44 is: 312.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.34 : 542.90 = 208.44 : x
  2. Step 2: Convert to fraction form
    362.34/542.90 = 208.44/x
  3. Step 3: Cross multiply
    362.34x = 542.90 × 208.44
  4. Step 4: Simplify right side
    362.34x = 113,162.60
  5. Step 5: Solve for x
    x = 113,162.60/362.34
  6. Step 6: Final answer
    x = 312.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.