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Finding the Fourth Proportional to 318.13, 473.57 and 303.22

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Solution

The fourth proportional to 318.13, 473.57 and 303.22 is: 451.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.13 : 473.57 = 303.22 : x
  2. Step 2: Convert to fraction form
    318.13/473.57 = 303.22/x
  3. Step 3: Cross multiply
    318.13x = 473.57 × 303.22
  4. Step 4: Simplify right side
    318.13x = 143,596.04
  5. Step 5: Solve for x
    x = 143,596.04/318.13
  6. Step 6: Final answer
    x = 451.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.