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Finding the Fourth Proportional to 1,235.10, 1,853.56 and 585.83

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Solution

The fourth proportional to 1,235.10, 1,853.56 and 585.83 is: 879.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.10 : 1,853.56 = 585.83 : x
  2. Step 2: Convert to fraction form
    1,235.10/1,853.56 = 585.83/x
  3. Step 3: Cross multiply
    1,235.10x = 1,853.56 × 585.83
  4. Step 4: Simplify right side
    1,235.10x = 1,085,871.05
  5. Step 5: Solve for x
    x = 1,085,871.05/1,235.10
  6. Step 6: Final answer
    x = 879.18

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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.