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Finding the Fourth Proportional to 644.03, 965.45 and 471.53

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Solution

The fourth proportional to 644.03, 965.45 and 471.53 is: 706.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.03 : 965.45 = 471.53 : x
  2. Step 2: Convert to fraction form
    644.03/965.45 = 471.53/x
  3. Step 3: Cross multiply
    644.03x = 965.45 × 471.53
  4. Step 4: Simplify right side
    644.03x = 455,242.23
  5. Step 5: Solve for x
    x = 455,242.23/644.03
  6. Step 6: Final answer
    x = 706.87

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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.