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Finding the Fourth Proportional to 555.15, 766.09 and 334.23

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Solution

The fourth proportional to 555.15, 766.09 and 334.23 is: 461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.15 : 766.09 = 334.23 : x
  2. Step 2: Convert to fraction form
    555.15/766.09 = 334.23/x
  3. Step 3: Cross multiply
    555.15x = 766.09 × 334.23
  4. Step 4: Simplify right side
    555.15x = 256,047.81
  5. Step 5: Solve for x
    x = 256,047.81/555.15
  6. Step 6: Final answer
    x = 461.22

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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.