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Finding the Fourth Proportional to 1,784.04, 2,676.09 and 485.51

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Solution

The fourth proportional to 1,784.04, 2,676.09 and 485.51 is: 728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.04 : 2,676.09 = 485.51 : x
  2. Step 2: Convert to fraction form
    1,784.04/2,676.09 = 485.51/x
  3. Step 3: Cross multiply
    1,784.04x = 2,676.09 × 485.51
  4. Step 4: Simplify right side
    1,784.04x = 1,299,254.17
  5. Step 5: Solve for x
    x = 1,299,254.17/1,784.04
  6. Step 6: Final answer
    x = 728.27

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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.