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Finding the Fourth Proportional to 106.62, 160.89 and 103.00

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Solution

The fourth proportional to 106.62, 160.89 and 103.00 is: 155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.62 : 160.89 = 103.00 : x
  2. Step 2: Convert to fraction form
    106.62/160.89 = 103.00/x
  3. Step 3: Cross multiply
    106.62x = 160.89 × 103.00
  4. Step 4: Simplify right side
    106.62x = 16,570.87
  5. Step 5: Solve for x
    x = 16,570.87/106.62
  6. Step 6: Final answer
    x = 155.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.