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Finding the Fourth Proportional to 673.15, 1,009.97 and 210.96

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Solution

The fourth proportional to 673.15, 1,009.97 and 210.96 is: 316.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.15 : 1,009.97 = 210.96 : x
  2. Step 2: Convert to fraction form
    673.15/1,009.97 = 210.96/x
  3. Step 3: Cross multiply
    673.15x = 1,009.97 × 210.96
  4. Step 4: Simplify right side
    673.15x = 213,063.27
  5. Step 5: Solve for x
    x = 213,063.27/673.15
  6. Step 6: Final answer
    x = 316.52

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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.