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Finding the Fourth Proportional to 52.92, 79.01 and 45.69

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Solution

The fourth proportional to 52.92, 79.01 and 45.69 is: 68.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.92 : 79.01 = 45.69 : x
  2. Step 2: Convert to fraction form
    52.92/79.01 = 45.69/x
  3. Step 3: Cross multiply
    52.92x = 79.01 × 45.69
  4. Step 4: Simplify right side
    52.92x = 3,609.97
  5. Step 5: Solve for x
    x = 3,609.97/52.92
  6. Step 6: Final answer
    x = 68.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.