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Finding the Fourth Proportional to 314.57, 469.61 and 273.57

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Solution

The fourth proportional to 314.57, 469.61 and 273.57 is: 408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.57 : 469.61 = 273.57 : x
  2. Step 2: Convert to fraction form
    314.57/469.61 = 273.57/x
  3. Step 3: Cross multiply
    314.57x = 469.61 × 273.57
  4. Step 4: Simplify right side
    314.57x = 128,469.84
  5. Step 5: Solve for x
    x = 128,469.84/314.57
  6. Step 6: Final answer
    x = 408.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.