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Finding the Fourth Proportional to 818.98, 1,129.34 and 701.33

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Solution

The fourth proportional to 818.98, 1,129.34 and 701.33 is: 967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.98 : 1,129.34 = 701.33 : x
  2. Step 2: Convert to fraction form
    818.98/1,129.34 = 701.33/x
  3. Step 3: Cross multiply
    818.98x = 1,129.34 × 701.33
  4. Step 4: Simplify right side
    818.98x = 792,036.13
  5. Step 5: Solve for x
    x = 792,036.13/818.98
  6. Step 6: Final answer
    x = 967.10

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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.