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Finding the Fourth Proportional to 789.60, 1,090.14 and 510.33

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Solution

The fourth proportional to 789.60, 1,090.14 and 510.33 is: 704.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.60 : 1,090.14 = 510.33 : x
  2. Step 2: Convert to fraction form
    789.60/1,090.14 = 510.33/x
  3. Step 3: Cross multiply
    789.60x = 1,090.14 × 510.33
  4. Step 4: Simplify right side
    789.60x = 556,331.15
  5. Step 5: Solve for x
    x = 556,331.15/789.60
  6. Step 6: Final answer
    x = 704.57

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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.