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Finding the Fourth Proportional to 485.83, 727.53 and 323.70

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Solution

The fourth proportional to 485.83, 727.53 and 323.70 is: 484.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.83 : 727.53 = 323.70 : x
  2. Step 2: Convert to fraction form
    485.83/727.53 = 323.70/x
  3. Step 3: Cross multiply
    485.83x = 727.53 × 323.70
  4. Step 4: Simplify right side
    485.83x = 235,501.46
  5. Step 5: Solve for x
    x = 235,501.46/485.83
  6. Step 6: Final answer
    x = 484.74

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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.