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Finding the Fourth Proportional to 488.07, 673.53 and 281.07

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Solution

The fourth proportional to 488.07, 673.53 and 281.07 is: 387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.07 : 673.53 = 281.07 : x
  2. Step 2: Convert to fraction form
    488.07/673.53 = 281.07/x
  3. Step 3: Cross multiply
    488.07x = 673.53 × 281.07
  4. Step 4: Simplify right side
    488.07x = 189,309.08
  5. Step 5: Solve for x
    x = 189,309.08/488.07
  6. Step 6: Final answer
    x = 387.87

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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.