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Finding the Fourth Proportional to 485.28, 669.68 and 264.23

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Solution

The fourth proportional to 485.28, 669.68 and 264.23 is: 364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.28 : 669.68 = 264.23 : x
  2. Step 2: Convert to fraction form
    485.28/669.68 = 264.23/x
  3. Step 3: Cross multiply
    485.28x = 669.68 × 264.23
  4. Step 4: Simplify right side
    485.28x = 176,944.88
  5. Step 5: Solve for x
    x = 176,944.88/485.28
  6. Step 6: Final answer
    x = 364.62

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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.