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Finding the Fourth Proportional to 601.70, 901.49 and 418.74

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Solution

The fourth proportional to 601.70, 901.49 and 418.74 is: 627.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.70 : 901.49 = 418.74 : x
  2. Step 2: Convert to fraction form
    601.70/901.49 = 418.74/x
  3. Step 3: Cross multiply
    601.70x = 901.49 × 418.74
  4. Step 4: Simplify right side
    601.70x = 377,487.83
  5. Step 5: Solve for x
    x = 377,487.83/601.70
  6. Step 6: Final answer
    x = 627.37

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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.