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Finding the Fourth Proportional to 618.19, 851.93 and 452.45

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Solution

The fourth proportional to 618.19, 851.93 and 452.45 is: 623.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.19 : 851.93 = 452.45 : x
  2. Step 2: Convert to fraction form
    618.19/851.93 = 452.45/x
  3. Step 3: Cross multiply
    618.19x = 851.93 × 452.45
  4. Step 4: Simplify right side
    618.19x = 385,455.60
  5. Step 5: Solve for x
    x = 385,455.60/618.19
  6. Step 6: Final answer
    x = 623.53

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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.