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Finding the Fourth Proportional to 1,783.20, 2,674.93 and 484.77

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Solution

The fourth proportional to 1,783.20, 2,674.93 and 484.77 is: 727.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.20 : 2,674.93 = 484.77 : x
  2. Step 2: Convert to fraction form
    1,783.20/2,674.93 = 484.77/x
  3. Step 3: Cross multiply
    1,783.20x = 2,674.93 × 484.77
  4. Step 4: Simplify right side
    1,783.20x = 1,296,725.82
  5. Step 5: Solve for x
    x = 1,296,725.82/1,783.20
  6. Step 6: Final answer
    x = 727.19

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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.