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Finding the Fourth Proportional to 488.68, 733.23 and 423.74

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Solution

The fourth proportional to 488.68, 733.23 and 423.74 is: 635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.68 : 733.23 = 423.74 : x
  2. Step 2: Convert to fraction form
    488.68/733.23 = 423.74/x
  3. Step 3: Cross multiply
    488.68x = 733.23 × 423.74
  4. Step 4: Simplify right side
    488.68x = 310,700.71
  5. Step 5: Solve for x
    x = 310,700.71/488.68
  6. Step 6: Final answer
    x = 635.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.