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Finding the Fourth Proportional to 162.50, 223.40 and 161.51

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Solution

The fourth proportional to 162.50, 223.40 and 161.51 is: 222.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.50 : 223.40 = 161.51 : x
  2. Step 2: Convert to fraction form
    162.50/223.40 = 161.51/x
  3. Step 3: Cross multiply
    162.50x = 223.40 × 161.51
  4. Step 4: Simplify right side
    162.50x = 36,079.41
  5. Step 5: Solve for x
    x = 36,079.41/162.50
  6. Step 6: Final answer
    x = 222.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.