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Finding the Fourth Proportional to 386.76, 580.34 and 296.04

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Solution

The fourth proportional to 386.76, 580.34 and 296.04 is: 444.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.76 : 580.34 = 296.04 : x
  2. Step 2: Convert to fraction form
    386.76/580.34 = 296.04/x
  3. Step 3: Cross multiply
    386.76x = 580.34 × 296.04
  4. Step 4: Simplify right side
    386.76x = 171,803.85
  5. Step 5: Solve for x
    x = 171,803.85/386.76
  6. Step 6: Final answer
    x = 444.21

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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.