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Finding the Fourth Proportional to 644.02, 960.98 and 604.85

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Solution

The fourth proportional to 644.02, 960.98 and 604.85 is: 902.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.02 : 960.98 = 604.85 : x
  2. Step 2: Convert to fraction form
    644.02/960.98 = 604.85/x
  3. Step 3: Cross multiply
    644.02x = 960.98 × 604.85
  4. Step 4: Simplify right side
    644.02x = 581,240.92
  5. Step 5: Solve for x
    x = 581,240.92/644.02
  6. Step 6: Final answer
    x = 902.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.