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Finding the Fourth Proportional to 345.22, 518.13 and 162.76

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Solution

The fourth proportional to 345.22, 518.13 and 162.76 is: 244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.22 : 518.13 = 162.76 : x
  2. Step 2: Convert to fraction form
    345.22/518.13 = 162.76/x
  3. Step 3: Cross multiply
    345.22x = 518.13 × 162.76
  4. Step 4: Simplify right side
    345.22x = 84,330.84
  5. Step 5: Solve for x
    x = 84,330.84/345.22
  6. Step 6: Final answer
    x = 244.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.