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Finding the Fourth Proportional to 660.55, 990.91 and 244.03

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Solution

The fourth proportional to 660.55, 990.91 and 244.03 is: 366.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.55 : 990.91 = 244.03 : x
  2. Step 2: Convert to fraction form
    660.55/990.91 = 244.03/x
  3. Step 3: Cross multiply
    660.55x = 990.91 × 244.03
  4. Step 4: Simplify right side
    660.55x = 241,811.77
  5. Step 5: Solve for x
    x = 241,811.77/660.55
  6. Step 6: Final answer
    x = 366.08

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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.