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Finding the Fourth Proportional to 554.94, 766.53 and 551.43

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Solution

The fourth proportional to 554.94, 766.53 and 551.43 is: 761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.94 : 766.53 = 551.43 : x
  2. Step 2: Convert to fraction form
    554.94/766.53 = 551.43/x
  3. Step 3: Cross multiply
    554.94x = 766.53 × 551.43
  4. Step 4: Simplify right side
    554.94x = 422,687.64
  5. Step 5: Solve for x
    x = 422,687.64/554.94
  6. Step 6: Final answer
    x = 761.68

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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.