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Finding the Fourth Proportional to 437.57, 603.84 and 238.40

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Solution

The fourth proportional to 437.57, 603.84 and 238.40 is: 328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.57 : 603.84 = 238.40 : x
  2. Step 2: Convert to fraction form
    437.57/603.84 = 238.40/x
  3. Step 3: Cross multiply
    437.57x = 603.84 × 238.40
  4. Step 4: Simplify right side
    437.57x = 143,951.24
  5. Step 5: Solve for x
    x = 143,951.24/437.57
  6. Step 6: Final answer
    x = 328.98

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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.