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Finding the Fourth Proportional to 488.06, 673.22 and 340.64

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Solution

The fourth proportional to 488.06, 673.22 and 340.64 is: 469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.06 : 673.22 = 340.64 : x
  2. Step 2: Convert to fraction form
    488.06/673.22 = 340.64/x
  3. Step 3: Cross multiply
    488.06x = 673.22 × 340.64
  4. Step 4: Simplify right side
    488.06x = 229,323.96
  5. Step 5: Solve for x
    x = 229,323.96/488.06
  6. Step 6: Final answer
    x = 469.87

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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.