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Finding the Fourth Proportional to 619.01, 849.75 and 531.53

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Solution

The fourth proportional to 619.01, 849.75 and 531.53 is: 729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.01 : 849.75 = 531.53 : x
  2. Step 2: Convert to fraction form
    619.01/849.75 = 531.53/x
  3. Step 3: Cross multiply
    619.01x = 849.75 × 531.53
  4. Step 4: Simplify right side
    619.01x = 451,663.37
  5. Step 5: Solve for x
    x = 451,663.37/619.01
  6. Step 6: Final answer
    x = 729.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.