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Finding the Fourth Proportional to 570.02, 854.85 and 281.42

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Solution

The fourth proportional to 570.02, 854.85 and 281.42 is: 422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.02 : 854.85 = 281.42 : x
  2. Step 2: Convert to fraction form
    570.02/854.85 = 281.42/x
  3. Step 3: Cross multiply
    570.02x = 854.85 × 281.42
  4. Step 4: Simplify right side
    570.02x = 240,571.89
  5. Step 5: Solve for x
    x = 240,571.89/570.02
  6. Step 6: Final answer
    x = 422.04

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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.