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Finding the Fourth Proportional to 160.47, 240.83 and 99.69

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Solution

The fourth proportional to 160.47, 240.83 and 99.69 is: 149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.47 : 240.83 = 99.69 : x
  2. Step 2: Convert to fraction form
    160.47/240.83 = 99.69/x
  3. Step 3: Cross multiply
    160.47x = 240.83 × 99.69
  4. Step 4: Simplify right side
    160.47x = 24,007.84
  5. Step 5: Solve for x
    x = 24,007.84/160.47
  6. Step 6: Final answer
    x = 149.61

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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.