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Finding the Fourth Proportional to 483.77, 722.15 and 425.38

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Solution

The fourth proportional to 483.77, 722.15 and 425.38 is: 634.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.77 : 722.15 = 425.38 : x
  2. Step 2: Convert to fraction form
    483.77/722.15 = 425.38/x
  3. Step 3: Cross multiply
    483.77x = 722.15 × 425.38
  4. Step 4: Simplify right side
    483.77x = 307,188.17
  5. Step 5: Solve for x
    x = 307,188.17/483.77
  6. Step 6: Final answer
    x = 634.99

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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.