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Finding the Fourth Proportional to 622.65, 935.81 and 555.23

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Solution

The fourth proportional to 622.65, 935.81 and 555.23 is: 834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.65 : 935.81 = 555.23 : x
  2. Step 2: Convert to fraction form
    622.65/935.81 = 555.23/x
  3. Step 3: Cross multiply
    622.65x = 935.81 × 555.23
  4. Step 4: Simplify right side
    622.65x = 519,582.33
  5. Step 5: Solve for x
    x = 519,582.33/622.65
  6. Step 6: Final answer
    x = 834.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.