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Finding the Fourth Proportional to 379.99, 570.08 and 197.47

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Solution

The fourth proportional to 379.99, 570.08 and 197.47 is: 296.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.99 : 570.08 = 197.47 : x
  2. Step 2: Convert to fraction form
    379.99/570.08 = 197.47/x
  3. Step 3: Cross multiply
    379.99x = 570.08 × 197.47
  4. Step 4: Simplify right side
    379.99x = 112,573.70
  5. Step 5: Solve for x
    x = 112,573.70/379.99
  6. Step 6: Final answer
    x = 296.25

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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.