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Finding the Fourth Proportional to 936.32, 1,404.71 and 673.07

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Solution

The fourth proportional to 936.32, 1,404.71 and 673.07 is: 1,009.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.32 : 1,404.71 = 673.07 : x
  2. Step 2: Convert to fraction form
    936.32/1,404.71 = 673.07/x
  3. Step 3: Cross multiply
    936.32x = 1,404.71 × 673.07
  4. Step 4: Simplify right side
    936.32x = 945,457.77
  5. Step 5: Solve for x
    x = 945,457.77/936.32
  6. Step 6: Final answer
    x = 1,009.76

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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.