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Finding the Fourth Proportional to 107.83, 162.02 and 64.63

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Solution

The fourth proportional to 107.83, 162.02 and 64.63 is: 97.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.83 : 162.02 = 64.63 : x
  2. Step 2: Convert to fraction form
    107.83/162.02 = 64.63/x
  3. Step 3: Cross multiply
    107.83x = 162.02 × 64.63
  4. Step 4: Simplify right side
    107.83x = 10,471.35
  5. Step 5: Solve for x
    x = 10,471.35/107.83
  6. Step 6: Final answer
    x = 97.11

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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.