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Finding the Fourth Proportional to 650.13, 897.05 and 388.23

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Solution

The fourth proportional to 650.13, 897.05 and 388.23 is: 535.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.13 : 897.05 = 388.23 : x
  2. Step 2: Convert to fraction form
    650.13/897.05 = 388.23/x
  3. Step 3: Cross multiply
    650.13x = 897.05 × 388.23
  4. Step 4: Simplify right side
    650.13x = 348,262.69
  5. Step 5: Solve for x
    x = 348,262.69/650.13
  6. Step 6: Final answer
    x = 535.68

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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.