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Finding the Fourth Proportional to 570.38, 855.02 and 245.30

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Solution

The fourth proportional to 570.38, 855.02 and 245.30 is: 367.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.38 : 855.02 = 245.30 : x
  2. Step 2: Convert to fraction form
    570.38/855.02 = 245.30/x
  3. Step 3: Cross multiply
    570.38x = 855.02 × 245.30
  4. Step 4: Simplify right side
    570.38x = 209,736.41
  5. Step 5: Solve for x
    x = 209,736.41/570.38
  6. Step 6: Final answer
    x = 367.71

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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.