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Finding the Fourth Proportional to 386.97, 582.54 and 352.95

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Solution

The fourth proportional to 386.97, 582.54 and 352.95 is: 531.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.97 : 582.54 = 352.95 : x
  2. Step 2: Convert to fraction form
    386.97/582.54 = 352.95/x
  3. Step 3: Cross multiply
    386.97x = 582.54 × 352.95
  4. Step 4: Simplify right side
    386.97x = 205,607.49
  5. Step 5: Solve for x
    x = 205,607.49/386.97
  6. Step 6: Final answer
    x = 531.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.