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Finding the Fourth Proportional to 570.16, 854.74 and 281.44

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Solution

The fourth proportional to 570.16, 854.74 and 281.44 is: 421.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.16 : 854.74 = 281.44 : x
  2. Step 2: Convert to fraction form
    570.16/854.74 = 281.44/x
  3. Step 3: Cross multiply
    570.16x = 854.74 × 281.44
  4. Step 4: Simplify right side
    570.16x = 240,558.03
  5. Step 5: Solve for x
    x = 240,558.03/570.16
  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.