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Finding the Fourth Proportional to 450.59, 622.31 and 401.38

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Solution

The fourth proportional to 450.59, 622.31 and 401.38 is: 554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.59 : 622.31 = 401.38 : x
  2. Step 2: Convert to fraction form
    450.59/622.31 = 401.38/x
  3. Step 3: Cross multiply
    450.59x = 622.31 × 401.38
  4. Step 4: Simplify right side
    450.59x = 249,779.23
  5. Step 5: Solve for x
    x = 249,779.23/450.59
  6. Step 6: Final answer
    x = 554.34

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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.