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Finding the Fourth Proportional to 846.27, 1,260.47 and 818.73

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Solution

The fourth proportional to 846.27, 1,260.47 and 818.73 is: 1,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.27 : 1,260.47 = 818.73 : x
  2. Step 2: Convert to fraction form
    846.27/1,260.47 = 818.73/x
  3. Step 3: Cross multiply
    846.27x = 1,260.47 × 818.73
  4. Step 4: Simplify right side
    846.27x = 1,031,986.65
  5. Step 5: Solve for x
    x = 1,031,986.65/846.27
  6. Step 6: Final answer
    x = 1,219.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.