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Finding the Fourth Proportional to 1,235, 1,853.41 and 585.74

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Solution

The fourth proportional to 1,235, 1,853.41 and 585.74 is: 879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235 : 1,853.41 = 585.74 : x
  2. Step 2: Convert to fraction form
    1,235/1,853.41 = 585.74/x
  3. Step 3: Cross multiply
    1,235x = 1,853.41 × 585.74
  4. Step 4: Simplify right side
    1,235x = 1,085,607.11
  5. Step 5: Solve for x
    x = 1,085,607.11/1,235
  6. Step 6: Final answer
    x = 879.03

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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.