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Finding the Fourth Proportional to 289.27, 434.02 and 106.79

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Solution

The fourth proportional to 289.27, 434.02 and 106.79 is: 160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.27 : 434.02 = 106.79 : x
  2. Step 2: Convert to fraction form
    289.27/434.02 = 106.79/x
  3. Step 3: Cross multiply
    289.27x = 434.02 × 106.79
  4. Step 4: Simplify right side
    289.27x = 46,349.00
  5. Step 5: Solve for x
    x = 46,349.00/289.27
  6. Step 6: Final answer
    x = 160.23

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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.