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Finding the Fourth Proportional to 833.97, 1,148.75 and 693.81

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Solution

The fourth proportional to 833.97, 1,148.75 and 693.81 is: 955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.97 : 1,148.75 = 693.81 : x
  2. Step 2: Convert to fraction form
    833.97/1,148.75 = 693.81/x
  3. Step 3: Cross multiply
    833.97x = 1,148.75 × 693.81
  4. Step 4: Simplify right side
    833.97x = 797,010.77
  5. Step 5: Solve for x
    x = 797,010.77/833.97
  6. Step 6: Final answer
    x = 955.68

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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.