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Finding the Fourth Proportional to 655.59, 983.64 and 308.91

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Solution

The fourth proportional to 655.59, 983.64 and 308.91 is: 463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.59 : 983.64 = 308.91 : x
  2. Step 2: Convert to fraction form
    655.59/983.64 = 308.91/x
  3. Step 3: Cross multiply
    655.59x = 983.64 × 308.91
  4. Step 4: Simplify right side
    655.59x = 303,861.08
  5. Step 5: Solve for x
    x = 303,861.08/655.59
  6. Step 6: Final answer
    x = 463.49

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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.