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Finding the Fourth Proportional to 607.54, 838.41 and 345.56

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Solution

The fourth proportional to 607.54, 838.41 and 345.56 is: 476.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.54 : 838.41 = 345.56 : x
  2. Step 2: Convert to fraction form
    607.54/838.41 = 345.56/x
  3. Step 3: Cross multiply
    607.54x = 838.41 × 345.56
  4. Step 4: Simplify right side
    607.54x = 289,720.96
  5. Step 5: Solve for x
    x = 289,720.96/607.54
  6. Step 6: Final answer
    x = 476.88

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1.5x scale

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.