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Finding the Fourth Proportional to 437.48, 604.49 and 312.92

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Solution

The fourth proportional to 437.48, 604.49 and 312.92 is: 432.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.48 : 604.49 = 312.92 : x
  2. Step 2: Convert to fraction form
    437.48/604.49 = 312.92/x
  3. Step 3: Cross multiply
    437.48x = 604.49 × 312.92
  4. Step 4: Simplify right side
    437.48x = 189,157.01
  5. Step 5: Solve for x
    x = 189,157.01/437.48
  6. Step 6: Final answer
    x = 432.38

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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.