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Finding the Fourth Proportional to 831.03, 1,146.09 and 656.07

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Solution

The fourth proportional to 831.03, 1,146.09 and 656.07 is: 904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.03 : 1,146.09 = 656.07 : x
  2. Step 2: Convert to fraction form
    831.03/1,146.09 = 656.07/x
  3. Step 3: Cross multiply
    831.03x = 1,146.09 × 656.07
  4. Step 4: Simplify right side
    831.03x = 751,915.27
  5. Step 5: Solve for x
    x = 751,915.27/831.03
  6. Step 6: Final answer
    x = 904.80

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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.