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Finding the Fourth Proportional to 1,262.23, 1,739.03 and 947.00

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Solution

The fourth proportional to 1,262.23, 1,739.03 and 947.00 is: 1,304.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.23 : 1,739.03 = 947.00 : x
  2. Step 2: Convert to fraction form
    1,262.23/1,739.03 = 947.00/x
  3. Step 3: Cross multiply
    1,262.23x = 1,739.03 × 947.00
  4. Step 4: Simplify right side
    1,262.23x = 1,646,861.02
  5. Step 5: Solve for x
    x = 1,646,861.02/1,262.23
  6. Step 6: Final answer
    x = 1,304.73

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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.