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Finding the Fourth Proportional to 483.14, 727.43 and 425.72

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Solution

The fourth proportional to 483.14, 727.43 and 425.72 is: 640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.14 : 727.43 = 425.72 : x
  2. Step 2: Convert to fraction form
    483.14/727.43 = 425.72/x
  3. Step 3: Cross multiply
    483.14x = 727.43 × 425.72
  4. Step 4: Simplify right side
    483.14x = 309,681.19
  5. Step 5: Solve for x
    x = 309,681.19/483.14
  6. Step 6: Final answer
    x = 640.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.