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Finding the Fourth Proportional to 650.71, 897.98 and 385.15

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Solution

The fourth proportional to 650.71, 897.98 and 385.15 is: 531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.71 : 897.98 = 385.15 : x
  2. Step 2: Convert to fraction form
    650.71/897.98 = 385.15/x
  3. Step 3: Cross multiply
    650.71x = 897.98 × 385.15
  4. Step 4: Simplify right side
    650.71x = 345,857.00
  5. Step 5: Solve for x
    x = 345,857.00/650.71
  6. Step 6: Final answer
    x = 531.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.