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Finding the Fourth Proportional to 622.66, 935.80 and 555.22

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Solution

The fourth proportional to 622.66, 935.80 and 555.22 is: 834.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.66 : 935.80 = 555.22 : x
  2. Step 2: Convert to fraction form
    622.66/935.80 = 555.22/x
  3. Step 3: Cross multiply
    622.66x = 935.80 × 555.22
  4. Step 4: Simplify right side
    622.66x = 519,574.88
  5. Step 5: Solve for x
    x = 519,574.88/622.66
  6. Step 6: Final answer
    x = 834.44

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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.