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Finding the Fourth Proportional to 607.21, 837.90 and 345.27

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Solution

The fourth proportional to 607.21, 837.90 and 345.27 is: 476.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.21 : 837.90 = 345.27 : x
  2. Step 2: Convert to fraction form
    607.21/837.90 = 345.27/x
  3. Step 3: Cross multiply
    607.21x = 837.90 × 345.27
  4. Step 4: Simplify right side
    607.21x = 289,301.73
  5. Step 5: Solve for x
    x = 289,301.73/607.21
  6. Step 6: Final answer
    x = 476.44

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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.