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Finding the Fourth Proportional to 604.96, 907.76 and 280.32

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Solution

The fourth proportional to 604.96, 907.76 and 280.32 is: 420.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.96 : 907.76 = 280.32 : x
  2. Step 2: Convert to fraction form
    604.96/907.76 = 280.32/x
  3. Step 3: Cross multiply
    604.96x = 907.76 × 280.32
  4. Step 4: Simplify right side
    604.96x = 254,463.28
  5. Step 5: Solve for x
    x = 254,463.28/604.96
  6. Step 6: Final answer
    x = 420.63

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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.