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Finding the Fourth Proportional to 604.59, 907.26 and 418.95

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Solution

The fourth proportional to 604.59, 907.26 and 418.95 is: 628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.59 : 907.26 = 418.95 : x
  2. Step 2: Convert to fraction form
    604.59/907.26 = 418.95/x
  3. Step 3: Cross multiply
    604.59x = 907.26 × 418.95
  4. Step 4: Simplify right side
    604.59x = 380,095.01
  5. Step 5: Solve for x
    x = 380,095.01/604.59
  6. Step 6: Final answer
    x = 628.69

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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.