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Finding the Fourth Proportional to 351.68, 485.45 and 264.60

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Solution

The fourth proportional to 351.68, 485.45 and 264.60 is: 365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.68 : 485.45 = 264.60 : x
  2. Step 2: Convert to fraction form
    351.68/485.45 = 264.60/x
  3. Step 3: Cross multiply
    351.68x = 485.45 × 264.60
  4. Step 4: Simplify right side
    351.68x = 128,448.75
  5. Step 5: Solve for x
    x = 128,448.75/351.68
  6. Step 6: Final answer
    x = 365.25

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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.