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Finding the Fourth Proportional to 555.93, 834.21 and 231.30

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Solution

The fourth proportional to 555.93, 834.21 and 231.30 is: 347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.93 : 834.21 = 231.30 : x
  2. Step 2: Convert to fraction form
    555.93/834.21 = 231.30/x
  3. Step 3: Cross multiply
    555.93x = 834.21 × 231.30
  4. Step 4: Simplify right side
    555.93x = 192,952.77
  5. Step 5: Solve for x
    x = 192,952.77/555.93
  6. Step 6: Final answer
    x = 347.08

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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.