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Finding the Fourth Proportional to 570.82, 854.79 and 281.50

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Solution

The fourth proportional to 570.82, 854.79 and 281.50 is: 421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.82 : 854.79 = 281.50 : x
  2. Step 2: Convert to fraction form
    570.82/854.79 = 281.50/x
  3. Step 3: Cross multiply
    570.82x = 854.79 × 281.50
  4. Step 4: Simplify right side
    570.82x = 240,623.39
  5. Step 5: Solve for x
    x = 240,623.39/570.82
  6. Step 6: Final answer
    x = 421.54

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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.