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Finding the Fourth Proportional to 555.09, 766.01 and 306.41

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Solution

The fourth proportional to 555.09, 766.01 and 306.41 is: 422.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.09 : 766.01 = 306.41 : x
  2. Step 2: Convert to fraction form
    555.09/766.01 = 306.41/x
  3. Step 3: Cross multiply
    555.09x = 766.01 × 306.41
  4. Step 4: Simplify right side
    555.09x = 234,707.76
  5. Step 5: Solve for x
    x = 234,707.76/555.09
  6. Step 6: Final answer
    x = 422.83

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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.