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Finding the Fourth Proportional to 485.06, 727.51 and 403.32

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Solution

The fourth proportional to 485.06, 727.51 and 403.32 is: 604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.06 : 727.51 = 403.32 : x
  2. Step 2: Convert to fraction form
    485.06/727.51 = 403.32/x
  3. Step 3: Cross multiply
    485.06x = 727.51 × 403.32
  4. Step 4: Simplify right side
    485.06x = 293,419.33
  5. Step 5: Solve for x
    x = 293,419.33/485.06
  6. Step 6: Final answer
    x = 604.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.