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Finding the Fourth Proportional to 328.51, 452.62 and 316.36

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Solution

The fourth proportional to 328.51, 452.62 and 316.36 is: 435.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.51 : 452.62 = 316.36 : x
  2. Step 2: Convert to fraction form
    328.51/452.62 = 316.36/x
  3. Step 3: Cross multiply
    328.51x = 452.62 × 316.36
  4. Step 4: Simplify right side
    328.51x = 143,189.28
  5. Step 5: Solve for x
    x = 143,189.28/328.51
  6. Step 6: Final answer
    x = 435.87

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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.