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Finding the Fourth Proportional to 570.85, 786.92 and 349.63

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Solution

The fourth proportional to 570.85, 786.92 and 349.63 is: 481.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.85 : 786.92 = 349.63 : x
  2. Step 2: Convert to fraction form
    570.85/786.92 = 349.63/x
  3. Step 3: Cross multiply
    570.85x = 786.92 × 349.63
  4. Step 4: Simplify right side
    570.85x = 275,127.12
  5. Step 5: Solve for x
    x = 275,127.12/570.85
  6. Step 6: Final answer
    x = 481.96

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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.