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Finding the Fourth Proportional to 704.98, 973.74 and 518.19

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Solution

The fourth proportional to 704.98, 973.74 and 518.19 is: 715.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.98 : 973.74 = 518.19 : x
  2. Step 2: Convert to fraction form
    704.98/973.74 = 518.19/x
  3. Step 3: Cross multiply
    704.98x = 973.74 × 518.19
  4. Step 4: Simplify right side
    704.98x = 504,582.33
  5. Step 5: Solve for x
    x = 504,582.33/704.98
  6. Step 6: Final answer
    x = 715.74

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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.