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Finding the Fourth Proportional to 603.05, 903.96 and 313.88

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Solution

The fourth proportional to 603.05, 903.96 and 313.88 is: 470.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.05 : 903.96 = 313.88 : x
  2. Step 2: Convert to fraction form
    603.05/903.96 = 313.88/x
  3. Step 3: Cross multiply
    603.05x = 903.96 × 313.88
  4. Step 4: Simplify right side
    603.05x = 283,730.45
  5. Step 5: Solve for x
    x = 283,730.45/603.05
  6. Step 6: Final answer
    x = 470.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.