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Finding the Fourth Proportional to 242.08, 362.82 and 139.16

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Solution

The fourth proportional to 242.08, 362.82 and 139.16 is: 208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.08 : 362.82 = 139.16 : x
  2. Step 2: Convert to fraction form
    242.08/362.82 = 139.16/x
  3. Step 3: Cross multiply
    242.08x = 362.82 × 139.16
  4. Step 4: Simplify right side
    242.08x = 50,490.03
  5. Step 5: Solve for x
    x = 50,490.03/242.08
  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.