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Finding the Fourth Proportional to 952.22, 1,426.89 and 678.89

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Solution

The fourth proportional to 952.22, 1,426.89 and 678.89 is: 1,017.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.22 : 1,426.89 = 678.89 : x
  2. Step 2: Convert to fraction form
    952.22/1,426.89 = 678.89/x
  3. Step 3: Cross multiply
    952.22x = 1,426.89 × 678.89
  4. Step 4: Simplify right side
    952.22x = 968,701.35
  5. Step 5: Solve for x
    x = 968,701.35/952.22
  6. Step 6: Final answer
    x = 1,017.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.