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Finding the Fourth Proportional to 713.03, 983.96 and 418.31

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Solution

The fourth proportional to 713.03, 983.96 and 418.31 is: 577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.03 : 983.96 = 418.31 : x
  2. Step 2: Convert to fraction form
    713.03/983.96 = 418.31/x
  3. Step 3: Cross multiply
    713.03x = 983.96 × 418.31
  4. Step 4: Simplify right side
    713.03x = 411,596.43
  5. Step 5: Solve for x
    x = 411,596.43/713.03
  6. Step 6: Final answer
    x = 577.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.