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Finding the Fourth Proportional to 379.84, 569.76 and 369.28

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Solution

The fourth proportional to 379.84, 569.76 and 369.28 is: 553.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.84 : 569.76 = 369.28 : x
  2. Step 2: Convert to fraction form
    379.84/569.76 = 369.28/x
  3. Step 3: Cross multiply
    379.84x = 569.76 × 369.28
  4. Step 4: Simplify right side
    379.84x = 210,400.97
  5. Step 5: Solve for x
    x = 210,400.97/379.84
  6. Step 6: Final answer
    x = 553.92

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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.