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Finding the Fourth Proportional to 488.13, 673.31 and 301.55

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Solution

The fourth proportional to 488.13, 673.31 and 301.55 is: 415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.13 : 673.31 = 301.55 : x
  2. Step 2: Convert to fraction form
    488.13/673.31 = 301.55/x
  3. Step 3: Cross multiply
    488.13x = 673.31 × 301.55
  4. Step 4: Simplify right side
    488.13x = 203,035.91
  5. Step 5: Solve for x
    x = 203,035.91/488.13
  6. Step 6: Final answer
    x = 415.95

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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.