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Finding the Fourth Proportional to 437.96, 603.74 and 290.32

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Solution

The fourth proportional to 437.96, 603.74 and 290.32 is: 400.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.96 : 603.74 = 290.32 : x
  2. Step 2: Convert to fraction form
    437.96/603.74 = 290.32/x
  3. Step 3: Cross multiply
    437.96x = 603.74 × 290.32
  4. Step 4: Simplify right side
    437.96x = 175,277.80
  5. Step 5: Solve for x
    x = 175,277.80/437.96
  6. Step 6: Final answer
    x = 400.21

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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.