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Finding the Fourth Proportional to 659.04, 981.72 and 622.56

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Solution

The fourth proportional to 659.04, 981.72 and 622.56 is: 927.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.04 : 981.72 = 622.56 : x
  2. Step 2: Convert to fraction form
    659.04/981.72 = 622.56/x
  3. Step 3: Cross multiply
    659.04x = 981.72 × 622.56
  4. Step 4: Simplify right side
    659.04x = 611,179.60
  5. Step 5: Solve for x
    x = 611,179.60/659.04
  6. Step 6: Final answer
    x = 927.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.