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Finding the Fourth Proportional to 538.83, 744.12 and 445.89

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Solution

The fourth proportional to 538.83, 744.12 and 445.89 is: 615.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.83 : 744.12 = 445.89 : x
  2. Step 2: Convert to fraction form
    538.83/744.12 = 445.89/x
  3. Step 3: Cross multiply
    538.83x = 744.12 × 445.89
  4. Step 4: Simplify right side
    538.83x = 331,795.67
  5. Step 5: Solve for x
    x = 331,795.67/538.83
  6. Step 6: Final answer
    x = 615.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.