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Finding the Fourth Proportional to 770.22, 1,062.54 and 504.66

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Solution

The fourth proportional to 770.22, 1,062.54 and 504.66 is: 696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.22 : 1,062.54 = 504.66 : x
  2. Step 2: Convert to fraction form
    770.22/1,062.54 = 504.66/x
  3. Step 3: Cross multiply
    770.22x = 1,062.54 × 504.66
  4. Step 4: Simplify right side
    770.22x = 536,221.44
  5. Step 5: Solve for x
    x = 536,221.44/770.22
  6. Step 6: Final answer
    x = 696.19

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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.