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Finding the Fourth Proportional to 673.76, 936.02 and 667.76

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Solution

The fourth proportional to 673.76, 936.02 and 667.76 is: 927.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.76 : 936.02 = 667.76 : x
  2. Step 2: Convert to fraction form
    673.76/936.02 = 667.76/x
  3. Step 3: Cross multiply
    673.76x = 936.02 × 667.76
  4. Step 4: Simplify right side
    673.76x = 625,036.72
  5. Step 5: Solve for x
    x = 625,036.72/673.76
  6. Step 6: Final answer
    x = 927.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.