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Finding the Fourth Proportional to 555.94, 832.79 and 281.65

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Solution

The fourth proportional to 555.94, 832.79 and 281.65 is: 421.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.94 : 832.79 = 281.65 : x
  2. Step 2: Convert to fraction form
    555.94/832.79 = 281.65/x
  3. Step 3: Cross multiply
    555.94x = 832.79 × 281.65
  4. Step 4: Simplify right side
    555.94x = 234,555.30
  5. Step 5: Solve for x
    x = 234,555.30/555.94
  6. Step 6: Final answer
    x = 421.91

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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.