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Finding the Fourth Proportional to 437.47, 603.69 and 313.44

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Solution

The fourth proportional to 437.47, 603.69 and 313.44 is: 432.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.47 : 603.69 = 313.44 : x
  2. Step 2: Convert to fraction form
    437.47/603.69 = 313.44/x
  3. Step 3: Cross multiply
    437.47x = 603.69 × 313.44
  4. Step 4: Simplify right side
    437.47x = 189,217.15
  5. Step 5: Solve for x
    x = 189,217.15/437.47
  6. Step 6: Final answer
    x = 432.53

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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.