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Finding the Fourth Proportional to 437.45, 603.93 and 290.34

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Solution

The fourth proportional to 437.45, 603.93 and 290.34 is: 400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.45 : 603.93 = 290.34 : x
  2. Step 2: Convert to fraction form
    437.45/603.93 = 290.34/x
  3. Step 3: Cross multiply
    437.45x = 603.93 × 290.34
  4. Step 4: Simplify right side
    437.45x = 175,340.56
  5. Step 5: Solve for x
    x = 175,340.56/437.45
  6. Step 6: Final answer
    x = 400.82

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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.