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Finding the Fourth Proportional to 656.68, 984.60 and 245.80

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Solution

The fourth proportional to 656.68, 984.60 and 245.80 is: 368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.68 : 984.60 = 245.80 : x
  2. Step 2: Convert to fraction form
    656.68/984.60 = 245.80/x
  3. Step 3: Cross multiply
    656.68x = 984.60 × 245.80
  4. Step 4: Simplify right side
    656.68x = 242,014.68
  5. Step 5: Solve for x
    x = 242,014.68/656.68
  6. Step 6: Final answer
    x = 368.54

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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.