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Finding the Fourth Proportional to 538.86, 742.59 and 383.34

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Solution

The fourth proportional to 538.86, 742.59 and 383.34 is: 528.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.86 : 742.59 = 383.34 : x
  2. Step 2: Convert to fraction form
    538.86/742.59 = 383.34/x
  3. Step 3: Cross multiply
    538.86x = 742.59 × 383.34
  4. Step 4: Simplify right side
    538.86x = 284,664.45
  5. Step 5: Solve for x
    x = 284,664.45/538.86
  6. Step 6: Final answer
    x = 528.27

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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.