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Finding the Fourth Proportional to 386.36, 579.62 and 296.20

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Solution

The fourth proportional to 386.36, 579.62 and 296.20 is: 444.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.36 : 579.62 = 296.20 : x
  2. Step 2: Convert to fraction form
    386.36/579.62 = 296.20/x
  3. Step 3: Cross multiply
    386.36x = 579.62 × 296.20
  4. Step 4: Simplify right side
    386.36x = 171,683.44
  5. Step 5: Solve for x
    x = 171,683.44/386.36
  6. Step 6: Final answer
    x = 444.36

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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.