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Finding the Fourth Proportional to 607.30, 838.35 and 397.48

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Solution

The fourth proportional to 607.30, 838.35 and 397.48 is: 548.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.30 : 838.35 = 397.48 : x
  2. Step 2: Convert to fraction form
    607.30/838.35 = 397.48/x
  3. Step 3: Cross multiply
    607.30x = 838.35 × 397.48
  4. Step 4: Simplify right side
    607.30x = 333,229.19
  5. Step 5: Solve for x
    x = 333,229.19/607.30
  6. Step 6: Final answer
    x = 548.71

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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.