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Finding the Fourth Proportional to 736.46, 1,015.19 and 618.81

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Solution

The fourth proportional to 736.46, 1,015.19 and 618.81 is: 853.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.46 : 1,015.19 = 618.81 : x
  2. Step 2: Convert to fraction form
    736.46/1,015.19 = 618.81/x
  3. Step 3: Cross multiply
    736.46x = 1,015.19 × 618.81
  4. Step 4: Simplify right side
    736.46x = 628,206.63
  5. Step 5: Solve for x
    x = 628,206.63/736.46
  6. Step 6: Final answer
    x = 853.01

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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.