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Finding the Fourth Proportional to 369.57, 509.81 and 238.53

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Solution

The fourth proportional to 369.57, 509.81 and 238.53 is: 329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.57 : 509.81 = 238.53 : x
  2. Step 2: Convert to fraction form
    369.57/509.81 = 238.53/x
  3. Step 3: Cross multiply
    369.57x = 509.81 × 238.53
  4. Step 4: Simplify right side
    369.57x = 121,603.79
  5. Step 5: Solve for x
    x = 121,603.79/369.57
  6. Step 6: Final answer
    x = 329.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.