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Finding the Fourth Proportional to 554.54, 831.62 and 189.23

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Solution

The fourth proportional to 554.54, 831.62 and 189.23 is: 283.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.54 : 831.62 = 189.23 : x
  2. Step 2: Convert to fraction form
    554.54/831.62 = 189.23/x
  3. Step 3: Cross multiply
    554.54x = 831.62 × 189.23
  4. Step 4: Simplify right side
    554.54x = 157,362.35
  5. Step 5: Solve for x
    x = 157,362.35/554.54
  6. Step 6: Final answer
    x = 283.77

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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.