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Finding the Fourth Proportional to 379.19, 571.57 and 347.98

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Solution

The fourth proportional to 379.19, 571.57 and 347.98 is: 524.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.19 : 571.57 = 347.98 : x
  2. Step 2: Convert to fraction form
    379.19/571.57 = 347.98/x
  3. Step 3: Cross multiply
    379.19x = 571.57 × 347.98
  4. Step 4: Simplify right side
    379.19x = 198,890.33
  5. Step 5: Solve for x
    x = 198,890.33/379.19
  6. Step 6: Final answer
    x = 524.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.