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Finding the Fourth Proportional to 328.23, 453.29 and 277.98

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Solution

The fourth proportional to 328.23, 453.29 and 277.98 is: 383.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.23 : 453.29 = 277.98 : x
  2. Step 2: Convert to fraction form
    328.23/453.29 = 277.98/x
  3. Step 3: Cross multiply
    328.23x = 453.29 × 277.98
  4. Step 4: Simplify right side
    328.23x = 126,004.16
  5. Step 5: Solve for x
    x = 126,004.16/328.23
  6. Step 6: Final answer
    x = 383.89

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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.