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Finding the Fourth Proportional to 437.15, 603.08 and 279.75

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Solution

The fourth proportional to 437.15, 603.08 and 279.75 is: 385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.15 : 603.08 = 279.75 : x
  2. Step 2: Convert to fraction form
    437.15/603.08 = 279.75/x
  3. Step 3: Cross multiply
    437.15x = 603.08 × 279.75
  4. Step 4: Simplify right side
    437.15x = 168,708.45
  5. Step 5: Solve for x
    x = 168,708.45/437.15
  6. Step 6: Final answer
    x = 385.93

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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.