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Finding the Fourth Proportional to 622.28, 858.51 and 373.50

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Solution

The fourth proportional to 622.28, 858.51 and 373.50 is: 515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.28 : 858.51 = 373.50 : x
  2. Step 2: Convert to fraction form
    622.28/858.51 = 373.50/x
  3. Step 3: Cross multiply
    622.28x = 858.51 × 373.50
  4. Step 4: Simplify right side
    622.28x = 320,653.49
  5. Step 5: Solve for x
    x = 320,653.49/622.28
  6. Step 6: Final answer
    x = 515.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.