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Finding the Fourth Proportional to 162.21, 241.73 and 155.32

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Solution

The fourth proportional to 162.21, 241.73 and 155.32 is: 231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.21 : 241.73 = 155.32 : x
  2. Step 2: Convert to fraction form
    162.21/241.73 = 155.32/x
  3. Step 3: Cross multiply
    162.21x = 241.73 × 155.32
  4. Step 4: Simplify right side
    162.21x = 37,545.50
  5. Step 5: Solve for x
    x = 37,545.50/162.21
  6. Step 6: Final answer
    x = 231.46

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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.