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Finding the Fourth Proportional to 554.50, 831.12 and 188.97

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Solution

The fourth proportional to 554.50, 831.12 and 188.97 is: 283.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.50 : 831.12 = 188.97 : x
  2. Step 2: Convert to fraction form
    554.50/831.12 = 188.97/x
  3. Step 3: Cross multiply
    554.50x = 831.12 × 188.97
  4. Step 4: Simplify right side
    554.50x = 157,056.75
  5. Step 5: Solve for x
    x = 157,056.75/554.50
  6. Step 6: Final answer
    x = 283.24

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Similar ratio
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1.5x scale

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.