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Finding the Fourth Proportional to 601.28, 901.86 and 418.58

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Solution

The fourth proportional to 601.28, 901.86 and 418.58 is: 627.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.28 : 901.86 = 418.58 : x
  2. Step 2: Convert to fraction form
    601.28/901.86 = 418.58/x
  3. Step 3: Cross multiply
    601.28x = 901.86 × 418.58
  4. Step 4: Simplify right side
    601.28x = 377,500.56
  5. Step 5: Solve for x
    x = 377,500.56/601.28
  6. Step 6: Final answer
    x = 627.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.