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Finding the Fourth Proportional to 386.48, 580.32 and 295.52

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Solution

The fourth proportional to 386.48, 580.32 and 295.52 is: 443.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.48 : 580.32 = 295.52 : x
  2. Step 2: Convert to fraction form
    386.48/580.32 = 295.52/x
  3. Step 3: Cross multiply
    386.48x = 580.32 × 295.52
  4. Step 4: Simplify right side
    386.48x = 171,496.17
  5. Step 5: Solve for x
    x = 171,496.17/386.48
  6. Step 6: Final answer
    x = 443.74

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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.