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Finding the Fourth Proportional to 888.65, 1,226.63 and 516.01

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Solution

The fourth proportional to 888.65, 1,226.63 and 516.01 is: 712.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.65 : 1,226.63 = 516.01 : x
  2. Step 2: Convert to fraction form
    888.65/1,226.63 = 516.01/x
  3. Step 3: Cross multiply
    888.65x = 1,226.63 × 516.01
  4. Step 4: Simplify right side
    888.65x = 632,953.35
  5. Step 5: Solve for x
    x = 632,953.35/888.65
  6. Step 6: Final answer
    x = 712.26

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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.