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Finding the Fourth Proportional to 394.85, 592.41 and 356.51

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Solution

The fourth proportional to 394.85, 592.41 and 356.51 is: 534.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.85 : 592.41 = 356.51 : x
  2. Step 2: Convert to fraction form
    394.85/592.41 = 356.51/x
  3. Step 3: Cross multiply
    394.85x = 592.41 × 356.51
  4. Step 4: Simplify right side
    394.85x = 211,200.09
  5. Step 5: Solve for x
    x = 211,200.09/394.85
  6. Step 6: Final answer
    x = 534.89

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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.