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Finding the Fourth Proportional to 482.55, 722.86 and 222.19

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Solution

The fourth proportional to 482.55, 722.86 and 222.19 is: 332.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.55 : 722.86 = 222.19 : x
  2. Step 2: Convert to fraction form
    482.55/722.86 = 222.19/x
  3. Step 3: Cross multiply
    482.55x = 722.86 × 222.19
  4. Step 4: Simplify right side
    482.55x = 160,612.26
  5. Step 5: Solve for x
    x = 160,612.26/482.55
  6. Step 6: Final answer
    x = 332.84

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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.