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Finding the Fourth Proportional to 488.82, 670.32 and 439.54

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Solution

The fourth proportional to 488.82, 670.32 and 439.54 is: 602.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.82 : 670.32 = 439.54 : x
  2. Step 2: Convert to fraction form
    488.82/670.32 = 439.54/x
  3. Step 3: Cross multiply
    488.82x = 670.32 × 439.54
  4. Step 4: Simplify right side
    488.82x = 294,632.45
  5. Step 5: Solve for x
    x = 294,632.45/488.82
  6. Step 6: Final answer
    x = 602.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.