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Finding the Fourth Proportional to 570.09, 855.13 and 159.17

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Solution

The fourth proportional to 570.09, 855.13 and 159.17 is: 238.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.09 : 855.13 = 159.17 : x
  2. Step 2: Convert to fraction form
    570.09/855.13 = 159.17/x
  3. Step 3: Cross multiply
    570.09x = 855.13 × 159.17
  4. Step 4: Simplify right side
    570.09x = 136,114.33
  5. Step 5: Solve for x
    x = 136,114.33/570.09
  6. Step 6: Final answer
    x = 238.76

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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.