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Finding the Fourth Proportional to 382.08, 575.72 and 315.10

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Solution

The fourth proportional to 382.08, 575.72 and 315.10 is: 474.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.08 : 575.72 = 315.10 : x
  2. Step 2: Convert to fraction form
    382.08/575.72 = 315.10/x
  3. Step 3: Cross multiply
    382.08x = 575.72 × 315.10
  4. Step 4: Simplify right side
    382.08x = 181,409.37
  5. Step 5: Solve for x
    x = 181,409.37/382.08
  6. Step 6: Final answer
    x = 474.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.