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Finding the Fourth Proportional to 162.61, 222.99 and 156.47

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Solution

The fourth proportional to 162.61, 222.99 and 156.47 is: 214.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.61 : 222.99 = 156.47 : x
  2. Step 2: Convert to fraction form
    162.61/222.99 = 156.47/x
  3. Step 3: Cross multiply
    162.61x = 222.99 × 156.47
  4. Step 4: Simplify right side
    162.61x = 34,889.54
  5. Step 5: Solve for x
    x = 34,889.54/162.61
  6. Step 6: Final answer
    x = 214.56

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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.