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Finding the Fourth Proportional to 1,458.43, 2,186.37 and 636.07

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Solution

The fourth proportional to 1,458.43, 2,186.37 and 636.07 is: 953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.43 : 2,186.37 = 636.07 : x
  2. Step 2: Convert to fraction form
    1,458.43/2,186.37 = 636.07/x
  3. Step 3: Cross multiply
    1,458.43x = 2,186.37 × 636.07
  4. Step 4: Simplify right side
    1,458.43x = 1,390,684.37
  5. Step 5: Solve for x
    x = 1,390,684.37/1,458.43
  6. Step 6: Final answer
    x = 953.55

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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.