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Finding the Fourth Proportional to 382.20, 536.70 and 382.20

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Solution

The fourth proportional to 382.20, 536.70 and 382.20 is: 536.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.20 : 536.70 = 382.20 : x
  2. Step 2: Convert to fraction form
    382.20/536.70 = 382.20/x
  3. Step 3: Cross multiply
    382.20x = 536.70 × 382.20
  4. Step 4: Simplify right side
    382.20x = 205,126.74
  5. Step 5: Solve for x
    x = 205,126.74/382.20
  6. Step 6: Final answer
    x = 536.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.