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Finding the Fourth Proportional to 650.28, 897.36 and 388.28

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Solution

The fourth proportional to 650.28, 897.36 and 388.28 is: 535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.28 : 897.36 = 388.28 : x
  2. Step 2: Convert to fraction form
    650.28/897.36 = 388.28/x
  3. Step 3: Cross multiply
    650.28x = 897.36 × 388.28
  4. Step 4: Simplify right side
    650.28x = 348,426.94
  5. Step 5: Solve for x
    x = 348,426.94/650.28
  6. Step 6: Final answer
    x = 535.81

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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.