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Finding the Fourth Proportional to 604.87, 907.30 and 280.19

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Solution

The fourth proportional to 604.87, 907.30 and 280.19 is: 420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.87 : 907.30 = 280.19 : x
  2. Step 2: Convert to fraction form
    604.87/907.30 = 280.19/x
  3. Step 3: Cross multiply
    604.87x = 907.30 × 280.19
  4. Step 4: Simplify right side
    604.87x = 254,216.39
  5. Step 5: Solve for x
    x = 254,216.39/604.87
  6. Step 6: Final answer
    x = 420.28

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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.