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Finding the Fourth Proportional to 483.79, 722.18 and 425.41

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Solution

The fourth proportional to 483.79, 722.18 and 425.41 is: 635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.79 : 722.18 = 425.41 : x
  2. Step 2: Convert to fraction form
    483.79/722.18 = 425.41/x
  3. Step 3: Cross multiply
    483.79x = 722.18 × 425.41
  4. Step 4: Simplify right side
    483.79x = 307,222.59
  5. Step 5: Solve for x
    x = 307,222.59/483.79
  6. Step 6: Final answer
    x = 635.03

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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.