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Finding the Fourth Proportional to 386.01, 578.76 and 166.77

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Solution

The fourth proportional to 386.01, 578.76 and 166.77 is: 250.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.01 : 578.76 = 166.77 : x
  2. Step 2: Convert to fraction form
    386.01/578.76 = 166.77/x
  3. Step 3: Cross multiply
    386.01x = 578.76 × 166.77
  4. Step 4: Simplify right side
    386.01x = 96,519.81
  5. Step 5: Solve for x
    x = 96,519.81/386.01
  6. Step 6: Final answer
    x = 250.04

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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.