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Finding the Fourth Proportional to 607.62, 838.44 and 345.54

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Solution

The fourth proportional to 607.62, 838.44 and 345.54 is: 476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.62 : 838.44 = 345.54 : x
  2. Step 2: Convert to fraction form
    607.62/838.44 = 345.54/x
  3. Step 3: Cross multiply
    607.62x = 838.44 × 345.54
  4. Step 4: Simplify right side
    607.62x = 289,714.56
  5. Step 5: Solve for x
    x = 289,714.56/607.62
  6. Step 6: Final answer
    x = 476.80

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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.