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Finding the Fourth Proportional to 386.36, 579.84 and 294.10

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Solution

The fourth proportional to 386.36, 579.84 and 294.10 is: 441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.36 : 579.84 = 294.10 : x
  2. Step 2: Convert to fraction form
    386.36/579.84 = 294.10/x
  3. Step 3: Cross multiply
    386.36x = 579.84 × 294.10
  4. Step 4: Simplify right side
    386.36x = 170,530.94
  5. Step 5: Solve for x
    x = 170,530.94/386.36
  6. Step 6: Final answer
    x = 441.38

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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.