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Finding the Fourth Proportional to 735.60, 1,097.07 and 618.60

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Solution

The fourth proportional to 735.60, 1,097.07 and 618.60 is: 922.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.60 : 1,097.07 = 618.60 : x
  2. Step 2: Convert to fraction form
    735.60/1,097.07 = 618.60/x
  3. Step 3: Cross multiply
    735.60x = 1,097.07 × 618.60
  4. Step 4: Simplify right side
    735.60x = 678,647.50
  5. Step 5: Solve for x
    x = 678,647.50/735.60
  6. Step 6: Final answer
    x = 922.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.