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Finding the Fourth Proportional to 835.53, 1,154.34 and 706.74

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Solution

The fourth proportional to 835.53, 1,154.34 and 706.74 is: 976.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.53 : 1,154.34 = 706.74 : x
  2. Step 2: Convert to fraction form
    835.53/1,154.34 = 706.74/x
  3. Step 3: Cross multiply
    835.53x = 1,154.34 × 706.74
  4. Step 4: Simplify right side
    835.53x = 815,818.25
  5. Step 5: Solve for x
    x = 815,818.25/835.53
  6. Step 6: Final answer
    x = 976.41

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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.