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Finding the Fourth Proportional to 354.56, 486.10 and 348.08

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Solution

The fourth proportional to 354.56, 486.10 and 348.08 is: 477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.56 : 486.10 = 348.08 : x
  2. Step 2: Convert to fraction form
    354.56/486.10 = 348.08/x
  3. Step 3: Cross multiply
    354.56x = 486.10 × 348.08
  4. Step 4: Simplify right side
    354.56x = 169,201.69
  5. Step 5: Solve for x
    x = 169,201.69/354.56
  6. Step 6: Final answer
    x = 477.22

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.