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Finding the Fourth Proportional to 607.36, 838.44 and 397.84

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Solution

The fourth proportional to 607.36, 838.44 and 397.84 is: 549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.36 : 838.44 = 397.84 : x
  2. Step 2: Convert to fraction form
    607.36/838.44 = 397.84/x
  3. Step 3: Cross multiply
    607.36x = 838.44 × 397.84
  4. Step 4: Simplify right side
    607.36x = 333,564.97
  5. Step 5: Solve for x
    x = 333,564.97/607.36
  6. Step 6: Final answer
    x = 549.20

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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.