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Finding the Fourth Proportional to 852.01, 1,278.01 and 266.99

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Solution

The fourth proportional to 852.01, 1,278.01 and 266.99 is: 400.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.01 : 1,278.01 = 266.99 : x
  2. Step 2: Convert to fraction form
    852.01/1,278.01 = 266.99/x
  3. Step 3: Cross multiply
    852.01x = 1,278.01 × 266.99
  4. Step 4: Simplify right side
    852.01x = 341,209.50
  5. Step 5: Solve for x
    x = 341,209.50/852.01
  6. Step 6: Final answer
    x = 400.48

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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.