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Finding the Fourth Proportional to 318.36, 474.35 and 304.38

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Solution

The fourth proportional to 318.36, 474.35 and 304.38 is: 453.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.36 : 474.35 = 304.38 : x
  2. Step 2: Convert to fraction form
    318.36/474.35 = 304.38/x
  3. Step 3: Cross multiply
    318.36x = 474.35 × 304.38
  4. Step 4: Simplify right side
    318.36x = 144,381.13
  5. Step 5: Solve for x
    x = 144,381.13/318.36
  6. Step 6: Final answer
    x = 453.52

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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.