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Finding the Fourth Proportional to 112.28, 168.35 and 46.35

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Solution

The fourth proportional to 112.28, 168.35 and 46.35 is: 69.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.28 : 168.35 = 46.35 : x
  2. Step 2: Convert to fraction form
    112.28/168.35 = 46.35/x
  3. Step 3: Cross multiply
    112.28x = 168.35 × 46.35
  4. Step 4: Simplify right side
    112.28x = 7,802.79
  5. Step 5: Solve for x
    x = 7,802.79/112.28
  6. Step 6: Final answer
    x = 69.50

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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.