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Finding the Fourth Proportional to 647.28, 967.25 and 483.12

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Solution

The fourth proportional to 647.28, 967.25 and 483.12 is: 721.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.28 : 967.25 = 483.12 : x
  2. Step 2: Convert to fraction form
    647.28/967.25 = 483.12/x
  3. Step 3: Cross multiply
    647.28x = 967.25 × 483.12
  4. Step 4: Simplify right side
    647.28x = 467,297.82
  5. Step 5: Solve for x
    x = 467,297.82/647.28
  6. Step 6: Final answer
    x = 721.94

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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.