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Finding the Fourth Proportional to 888.77, 1,226.81 and 763.93

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Solution

The fourth proportional to 888.77, 1,226.81 and 763.93 is: 1,054.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.77 : 1,226.81 = 763.93 : x
  2. Step 2: Convert to fraction form
    888.77/1,226.81 = 763.93/x
  3. Step 3: Cross multiply
    888.77x = 1,226.81 × 763.93
  4. Step 4: Simplify right side
    888.77x = 937,200.41
  5. Step 5: Solve for x
    x = 937,200.41/888.77
  6. Step 6: Final answer
    x = 1,054.49

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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.