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Finding the Fourth Proportional to 656.00, 981.69 and 395.82

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Solution

The fourth proportional to 656.00, 981.69 and 395.82 is: 592.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.00 : 981.69 = 395.82 : x
  2. Step 2: Convert to fraction form
    656.00/981.69 = 395.82/x
  3. Step 3: Cross multiply
    656.00x = 981.69 × 395.82
  4. Step 4: Simplify right side
    656.00x = 388,571.05
  5. Step 5: Solve for x
    x = 388,571.05/656.00
  6. Step 6: Final answer
    x = 592.34

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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.