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Finding the Fourth Proportional to 650.34, 897.30 and 388.35

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Solution

The fourth proportional to 650.34, 897.30 and 388.35 is: 535.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.34 : 897.30 = 388.35 : x
  2. Step 2: Convert to fraction form
    650.34/897.30 = 388.35/x
  3. Step 3: Cross multiply
    650.34x = 897.30 × 388.35
  4. Step 4: Simplify right side
    650.34x = 348,466.46
  5. Step 5: Solve for x
    x = 348,466.46/650.34
  6. Step 6: Final answer
    x = 535.82

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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.