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Finding the Fourth Proportional to 571.18, 855.18 and 375.58

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Solution

The fourth proportional to 571.18, 855.18 and 375.58 is: 562.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.18 : 855.18 = 375.58 : x
  2. Step 2: Convert to fraction form
    571.18/855.18 = 375.58/x
  3. Step 3: Cross multiply
    571.18x = 855.18 × 375.58
  4. Step 4: Simplify right side
    571.18x = 321,188.50
  5. Step 5: Solve for x
    x = 321,188.50/571.18
  6. Step 6: Final answer
    x = 562.32

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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.