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Finding the Fourth Proportional to 285.86, 394.05 and 175.13

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Solution

The fourth proportional to 285.86, 394.05 and 175.13 is: 241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.86 : 394.05 = 175.13 : x
  2. Step 2: Convert to fraction form
    285.86/394.05 = 175.13/x
  3. Step 3: Cross multiply
    285.86x = 394.05 × 175.13
  4. Step 4: Simplify right side
    285.86x = 69,009.98
  5. Step 5: Solve for x
    x = 69,009.98/285.86
  6. Step 6: Final answer
    x = 241.41

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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.