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Finding the Fourth Proportional to 570.51, 855.09 and 504.90

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Solution

The fourth proportional to 570.51, 855.09 and 504.90 is: 756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.51 : 855.09 = 504.90 : x
  2. Step 2: Convert to fraction form
    570.51/855.09 = 504.90/x
  3. Step 3: Cross multiply
    570.51x = 855.09 × 504.90
  4. Step 4: Simplify right side
    570.51x = 431,734.94
  5. Step 5: Solve for x
    x = 431,734.94/570.51
  6. Step 6: Final answer
    x = 756.75

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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.