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Finding the Fourth Proportional to 162.25, 242.38 and 159.37

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Solution

The fourth proportional to 162.25, 242.38 and 159.37 is: 238.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.25 : 242.38 = 159.37 : x
  2. Step 2: Convert to fraction form
    162.25/242.38 = 159.37/x
  3. Step 3: Cross multiply
    162.25x = 242.38 × 159.37
  4. Step 4: Simplify right side
    162.25x = 38,627.69
  5. Step 5: Solve for x
    x = 38,627.69/162.25
  6. Step 6: Final answer
    x = 238.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.