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Finding the Fourth Proportional to 383.19, 571.82 and 342.17

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Solution

The fourth proportional to 383.19, 571.82 and 342.17 is: 510.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.19 : 571.82 = 342.17 : x
  2. Step 2: Convert to fraction form
    383.19/571.82 = 342.17/x
  3. Step 3: Cross multiply
    383.19x = 571.82 × 342.17
  4. Step 4: Simplify right side
    383.19x = 195,659.65
  5. Step 5: Solve for x
    x = 195,659.65/383.19
  6. Step 6: Final answer
    x = 510.61

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.