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Finding the Fourth Proportional to 607.37, 838.26 and 386.55

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Solution

The fourth proportional to 607.37, 838.26 and 386.55 is: 533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.37 : 838.26 = 386.55 : x
  2. Step 2: Convert to fraction form
    607.37/838.26 = 386.55/x
  3. Step 3: Cross multiply
    607.37x = 838.26 × 386.55
  4. Step 4: Simplify right side
    607.37x = 324,029.40
  5. Step 5: Solve for x
    x = 324,029.40/607.37
  6. Step 6: Final answer
    x = 533.50

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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.