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Finding the Fourth Proportional to 378.14, 522.08 and 247.36

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Solution

The fourth proportional to 378.14, 522.08 and 247.36 is: 341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.14 : 522.08 = 247.36 : x
  2. Step 2: Convert to fraction form
    378.14/522.08 = 247.36/x
  3. Step 3: Cross multiply
    378.14x = 522.08 × 247.36
  4. Step 4: Simplify right side
    378.14x = 129,141.71
  5. Step 5: Solve for x
    x = 129,141.71/378.14
  6. Step 6: Final answer
    x = 341.52

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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.