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Finding the Fourth Proportional to 650.22, 897.18 and 388.16

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Solution

The fourth proportional to 650.22, 897.18 and 388.16 is: 535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.22 : 897.18 = 388.16 : x
  2. Step 2: Convert to fraction form
    650.22/897.18 = 388.16/x
  3. Step 3: Cross multiply
    650.22x = 897.18 × 388.16
  4. Step 4: Simplify right side
    650.22x = 348,249.39
  5. Step 5: Solve for x
    x = 348,249.39/650.22
  6. Step 6: Final answer
    x = 535.59

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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.