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Finding the Fourth Proportional to 538.75, 744.16 and 415.94

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Solution

The fourth proportional to 538.75, 744.16 and 415.94 is: 574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.75 : 744.16 = 415.94 : x
  2. Step 2: Convert to fraction form
    538.75/744.16 = 415.94/x
  3. Step 3: Cross multiply
    538.75x = 744.16 × 415.94
  4. Step 4: Simplify right side
    538.75x = 309,523.10
  5. Step 5: Solve for x
    x = 309,523.10/538.75
  6. Step 6: Final answer
    x = 574.52

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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.