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Finding the Fourth Proportional to 582.71, 874.22 and 217.50

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Solution

The fourth proportional to 582.71, 874.22 and 217.50 is: 326.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.71 : 874.22 = 217.50 : x
  2. Step 2: Convert to fraction form
    582.71/874.22 = 217.50/x
  3. Step 3: Cross multiply
    582.71x = 874.22 × 217.50
  4. Step 4: Simplify right side
    582.71x = 190,141.76
  5. Step 5: Solve for x
    x = 190,141.76/582.71
  6. Step 6: Final answer
    x = 326.31

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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.