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Finding the Fourth Proportional to 1,486.54, 2,230.08 and 837.64

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Solution

The fourth proportional to 1,486.54, 2,230.08 and 837.64 is: 1,256.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.54 : 2,230.08 = 837.64 : x
  2. Step 2: Convert to fraction form
    1,486.54/2,230.08 = 837.64/x
  3. Step 3: Cross multiply
    1,486.54x = 2,230.08 × 837.64
  4. Step 4: Simplify right side
    1,486.54x = 1,868,004.21
  5. Step 5: Solve for x
    x = 1,868,004.21/1,486.54
  6. Step 6: Final answer
    x = 1,256.61

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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.