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Finding the Fourth Proportional to 1,425.45, 1,967.14 and 836.00

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Solution

The fourth proportional to 1,425.45, 1,967.14 and 836.00 is: 1,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.45 : 1,967.14 = 836.00 : x
  2. Step 2: Convert to fraction form
    1,425.45/1,967.14 = 836.00/x
  3. Step 3: Cross multiply
    1,425.45x = 1,967.14 × 836.00
  4. Step 4: Simplify right side
    1,425.45x = 1,644,527.63
  5. Step 5: Solve for x
    x = 1,644,527.63/1,425.45
  6. Step 6: Final answer
    x = 1,153.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.