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Finding the Fourth Proportional to 538.43, 742.82 and 359.06

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Solution

The fourth proportional to 538.43, 742.82 and 359.06 is: 495.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.43 : 742.82 = 359.06 : x
  2. Step 2: Convert to fraction form
    538.43/742.82 = 359.06/x
  3. Step 3: Cross multiply
    538.43x = 742.82 × 359.06
  4. Step 4: Simplify right side
    538.43x = 266,715.15
  5. Step 5: Solve for x
    x = 266,715.15/538.43
  6. Step 6: Final answer
    x = 495.36

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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.