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Finding the Fourth Proportional to 655.63, 983.43 and 330.91

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Solution

The fourth proportional to 655.63, 983.43 and 330.91 is: 496.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.63 : 983.43 = 330.91 : x
  2. Step 2: Convert to fraction form
    655.63/983.43 = 330.91/x
  3. Step 3: Cross multiply
    655.63x = 983.43 × 330.91
  4. Step 4: Simplify right side
    655.63x = 325,426.82
  5. Step 5: Solve for x
    x = 325,426.82/655.63
  6. Step 6: Final answer
    x = 496.36

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1.5x scale

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.