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Finding the Fourth Proportional to 656.80, 983.96 and 483.28

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Solution

The fourth proportional to 656.80, 983.96 and 483.28 is: 724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.80 : 983.96 = 483.28 : x
  2. Step 2: Convert to fraction form
    656.80/983.96 = 483.28/x
  3. Step 3: Cross multiply
    656.80x = 983.96 × 483.28
  4. Step 4: Simplify right side
    656.80x = 475,528.19
  5. Step 5: Solve for x
    x = 475,528.19/656.80
  6. Step 6: Final answer
    x = 724.01

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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.