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Finding the Fourth Proportional to 242.01, 362.12 and 139.39

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Solution

The fourth proportional to 242.01, 362.12 and 139.39 is: 208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.01 : 362.12 = 139.39 : x
  2. Step 2: Convert to fraction form
    242.01/362.12 = 139.39/x
  3. Step 3: Cross multiply
    242.01x = 362.12 × 139.39
  4. Step 4: Simplify right side
    242.01x = 50,475.91
  5. Step 5: Solve for x
    x = 50,475.91/242.01
  6. Step 6: Final answer
    x = 208.57

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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.