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Finding the Fourth Proportional to 660.99, 991.14 and 222.08

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Solution

The fourth proportional to 660.99, 991.14 and 222.08 is: 333.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.99 : 991.14 = 222.08 : x
  2. Step 2: Convert to fraction form
    660.99/991.14 = 222.08/x
  3. Step 3: Cross multiply
    660.99x = 991.14 × 222.08
  4. Step 4: Simplify right side
    660.99x = 220,112.37
  5. Step 5: Solve for x
    x = 220,112.37/660.99
  6. Step 6: Final answer
    x = 333.00

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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.