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Finding the Fourth Proportional to 386.71, 582.19 and 352.69

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Solution

The fourth proportional to 386.71, 582.19 and 352.69 is: 530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.71 : 582.19 = 352.69 : x
  2. Step 2: Convert to fraction form
    386.71/582.19 = 352.69/x
  3. Step 3: Cross multiply
    386.71x = 582.19 × 352.69
  4. Step 4: Simplify right side
    386.71x = 205,332.59
  5. Step 5: Solve for x
    x = 205,332.59/386.71
  6. Step 6: Final answer
    x = 530.97

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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.