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Finding the Fourth Proportional to 622.49, 858.74 and 373.37

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Solution

The fourth proportional to 622.49, 858.74 and 373.37 is: 515.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.49 : 858.74 = 373.37 : x
  2. Step 2: Convert to fraction form
    622.49/858.74 = 373.37/x
  3. Step 3: Cross multiply
    622.49x = 858.74 × 373.37
  4. Step 4: Simplify right side
    622.49x = 320,630.83
  5. Step 5: Solve for x
    x = 320,630.83/622.49
  6. Step 6: Final answer
    x = 515.08

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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.