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Finding the Fourth Proportional to 587.72, 883.38 and 393.42

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Solution

The fourth proportional to 587.72, 883.38 and 393.42 is: 591.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.72 : 883.38 = 393.42 : x
  2. Step 2: Convert to fraction form
    587.72/883.38 = 393.42/x
  3. Step 3: Cross multiply
    587.72x = 883.38 × 393.42
  4. Step 4: Simplify right side
    587.72x = 347,539.36
  5. Step 5: Solve for x
    x = 347,539.36/587.72
  6. Step 6: Final answer
    x = 591.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.