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Finding the Fourth Proportional to 605.98, 907.99 and 423.58

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Solution

The fourth proportional to 605.98, 907.99 and 423.58 is: 634.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.98 : 907.99 = 423.58 : x
  2. Step 2: Convert to fraction form
    605.98/907.99 = 423.58/x
  3. Step 3: Cross multiply
    605.98x = 907.99 × 423.58
  4. Step 4: Simplify right side
    605.98x = 384,604.29
  5. Step 5: Solve for x
    x = 384,604.29/605.98
  6. Step 6: Final answer
    x = 634.68

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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.