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Finding the Fourth Proportional to 328.55, 453.30 and 245.93

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Solution

The fourth proportional to 328.55, 453.30 and 245.93 is: 339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.55 : 453.30 = 245.93 : x
  2. Step 2: Convert to fraction form
    328.55/453.30 = 245.93/x
  3. Step 3: Cross multiply
    328.55x = 453.30 × 245.93
  4. Step 4: Simplify right side
    328.55x = 111,480.07
  5. Step 5: Solve for x
    x = 111,480.07/328.55
  6. Step 6: Final answer
    x = 339.31

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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.