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Finding the Fourth Proportional to 484, 727.62 and 340.72

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Solution

The fourth proportional to 484, 727.62 and 340.72 is: 512.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    484 : 727.62 = 340.72 : x
  2. Step 2: Convert to fraction form
    484/727.62 = 340.72/x
  3. Step 3: Cross multiply
    484x = 727.62 × 340.72
  4. Step 4: Simplify right side
    484x = 247,914.69
  5. Step 5: Solve for x
    x = 247,914.69/484
  6. Step 6: Final answer
    x = 512.22

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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.