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Finding the Fourth Proportional to 162.15, 223.95 and 131.37

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Solution

The fourth proportional to 162.15, 223.95 and 131.37 is: 181.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.15 : 223.95 = 131.37 : x
  2. Step 2: Convert to fraction form
    162.15/223.95 = 131.37/x
  3. Step 3: Cross multiply
    162.15x = 223.95 × 131.37
  4. Step 4: Simplify right side
    162.15x = 29,420.31
  5. Step 5: Solve for x
    x = 29,420.31/162.15
  6. Step 6: Final answer
    x = 181.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.