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Finding the Fourth Proportional to 412.71, 569.57 and 238.07

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Solution

The fourth proportional to 412.71, 569.57 and 238.07 is: 328.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.71 : 569.57 = 238.07 : x
  2. Step 2: Convert to fraction form
    412.71/569.57 = 238.07/x
  3. Step 3: Cross multiply
    412.71x = 569.57 × 238.07
  4. Step 4: Simplify right side
    412.71x = 135,593.49
  5. Step 5: Solve for x
    x = 135,593.49/412.71
  6. Step 6: Final answer
    x = 328.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.