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Finding the Fourth Proportional to 538.60, 742.82 and 383.08

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Solution

The fourth proportional to 538.60, 742.82 and 383.08 is: 528.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.60 : 742.82 = 383.08 : x
  2. Step 2: Convert to fraction form
    538.60/742.82 = 383.08/x
  3. Step 3: Cross multiply
    538.60x = 742.82 × 383.08
  4. Step 4: Simplify right side
    538.60x = 284,559.49
  5. Step 5: Solve for x
    x = 284,559.49/538.60
  6. Step 6: Final answer
    x = 528.33

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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.