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Finding the Fourth Proportional to 1,700.72, 2,346.77 and 982.86

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Solution

The fourth proportional to 1,700.72, 2,346.77 and 982.86 is: 1,356.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.72 : 2,346.77 = 982.86 : x
  2. Step 2: Convert to fraction form
    1,700.72/2,346.77 = 982.86/x
  3. Step 3: Cross multiply
    1,700.72x = 2,346.77 × 982.86
  4. Step 4: Simplify right side
    1,700.72x = 2,306,546.36
  5. Step 5: Solve for x
    x = 2,306,546.36/1,700.72
  6. Step 6: Final answer
    x = 1,356.22

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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.