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Finding the Fourth Proportional to 356.51, 491.81 and 232.38

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Solution

The fourth proportional to 356.51, 491.81 and 232.38 is: 320.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.51 : 491.81 = 232.38 : x
  2. Step 2: Convert to fraction form
    356.51/491.81 = 232.38/x
  3. Step 3: Cross multiply
    356.51x = 491.81 × 232.38
  4. Step 4: Simplify right side
    356.51x = 114,285.65
  5. Step 5: Solve for x
    x = 114,285.65/356.51
  6. Step 6: Final answer
    x = 320.57

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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.