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Finding the Fourth Proportional to 852.88, 1,279.14 and 488.36

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Solution

The fourth proportional to 852.88, 1,279.14 and 488.36 is: 732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.88 : 1,279.14 = 488.36 : x
  2. Step 2: Convert to fraction form
    852.88/1,279.14 = 488.36/x
  3. Step 3: Cross multiply
    852.88x = 1,279.14 × 488.36
  4. Step 4: Simplify right side
    852.88x = 624,680.81
  5. Step 5: Solve for x
    x = 624,680.81/852.88
  6. Step 6: Final answer
    x = 732.44

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1.5x scale

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.