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Finding the Fourth Proportional to 909.42, 1,364.63 and 704.39

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Solution

The fourth proportional to 909.42, 1,364.63 and 704.39 is: 1,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.42 : 1,364.63 = 704.39 : x
  2. Step 2: Convert to fraction form
    909.42/1,364.63 = 704.39/x
  3. Step 3: Cross multiply
    909.42x = 1,364.63 × 704.39
  4. Step 4: Simplify right side
    909.42x = 961,229.06
  5. Step 5: Solve for x
    x = 961,229.06/909.42
  6. Step 6: Final answer
    x = 1,056.97

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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.