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Finding the Fourth Proportional to 382.12, 572.14 and 357.16

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Solution

The fourth proportional to 382.12, 572.14 and 357.16 is: 534.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.12 : 572.14 = 357.16 : x
  2. Step 2: Convert to fraction form
    382.12/572.14 = 357.16/x
  3. Step 3: Cross multiply
    382.12x = 572.14 × 357.16
  4. Step 4: Simplify right side
    382.12x = 204,345.52
  5. Step 5: Solve for x
    x = 204,345.52/382.12
  6. Step 6: Final answer
    x = 534.77

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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.