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Finding the Fourth Proportional to 570.01, 854.44 and 387.49

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Solution

The fourth proportional to 570.01, 854.44 and 387.49 is: 580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.01 : 854.44 = 387.49 : x
  2. Step 2: Convert to fraction form
    570.01/854.44 = 387.49/x
  3. Step 3: Cross multiply
    570.01x = 854.44 × 387.49
  4. Step 4: Simplify right side
    570.01x = 331,086.96
  5. Step 5: Solve for x
    x = 331,086.96/570.01
  6. Step 6: Final answer
    x = 580.84

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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.