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Finding the Fourth Proportional to 350.47, 483.21 and 280.63

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Solution

The fourth proportional to 350.47, 483.21 and 280.63 is: 386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.47 : 483.21 = 280.63 : x
  2. Step 2: Convert to fraction form
    350.47/483.21 = 280.63/x
  3. Step 3: Cross multiply
    350.47x = 483.21 × 280.63
  4. Step 4: Simplify right side
    350.47x = 135,603.22
  5. Step 5: Solve for x
    x = 135,603.22/350.47
  6. Step 6: Final answer
    x = 386.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.