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Finding the Fourth Proportional to 1,818.51, 2,728.30 and 585.89

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Solution

The fourth proportional to 1,818.51, 2,728.30 and 585.89 is: 879.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.51 : 2,728.30 = 585.89 : x
  2. Step 2: Convert to fraction form
    1,818.51/2,728.30 = 585.89/x
  3. Step 3: Cross multiply
    1,818.51x = 2,728.30 × 585.89
  4. Step 4: Simplify right side
    1,818.51x = 1,598,495.26
  5. Step 5: Solve for x
    x = 1,598,495.26/1,818.51
  6. Step 6: Final answer
    x = 879.01

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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.