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Finding the Fourth Proportional to 656.19, 984.55 and 645.83

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Solution

The fourth proportional to 656.19, 984.55 and 645.83 is: 969.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.19 : 984.55 = 645.83 : x
  2. Step 2: Convert to fraction form
    656.19/984.55 = 645.83/x
  3. Step 3: Cross multiply
    656.19x = 984.55 × 645.83
  4. Step 4: Simplify right side
    656.19x = 635,847.00
  5. Step 5: Solve for x
    x = 635,847.00/656.19
  6. Step 6: Final answer
    x = 969.00

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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.