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Finding the Fourth Proportional to 482.55, 722.64 and 379.57

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Solution

The fourth proportional to 482.55, 722.64 and 379.57 is: 568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.55 : 722.64 = 379.57 : x
  2. Step 2: Convert to fraction form
    482.55/722.64 = 379.57/x
  3. Step 3: Cross multiply
    482.55x = 722.64 × 379.57
  4. Step 4: Simplify right side
    482.55x = 274,292.46
  5. Step 5: Solve for x
    x = 274,292.46/482.55
  6. Step 6: Final answer
    x = 568.42

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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.