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Finding the Fourth Proportional to 852.21, 1,278.77 and 462.50

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Solution

The fourth proportional to 852.21, 1,278.77 and 462.50 is: 694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.21 : 1,278.77 = 462.50 : x
  2. Step 2: Convert to fraction form
    852.21/1,278.77 = 462.50/x
  3. Step 3: Cross multiply
    852.21x = 1,278.77 × 462.50
  4. Step 4: Simplify right side
    852.21x = 591,431.13
  5. Step 5: Solve for x
    x = 591,431.13/852.21
  6. Step 6: Final answer
    x = 694.00

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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.