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Finding the Fourth Proportional to 362.02, 542.62 and 208.02

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Solution

The fourth proportional to 362.02, 542.62 and 208.02 is: 311.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.02 : 542.62 = 208.02 : x
  2. Step 2: Convert to fraction form
    362.02/542.62 = 208.02/x
  3. Step 3: Cross multiply
    362.02x = 542.62 × 208.02
  4. Step 4: Simplify right side
    362.02x = 112,875.81
  5. Step 5: Solve for x
    x = 112,875.81/362.02
  6. Step 6: Final answer
    x = 311.79

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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.