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Finding the Fourth Proportional to 328.40, 452.13 and 253.52

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Solution

The fourth proportional to 328.40, 452.13 and 253.52 is: 349.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.40 : 452.13 = 253.52 : x
  2. Step 2: Convert to fraction form
    328.40/452.13 = 253.52/x
  3. Step 3: Cross multiply
    328.40x = 452.13 × 253.52
  4. Step 4: Simplify right side
    328.40x = 114,624.00
  5. Step 5: Solve for x
    x = 114,624.00/328.40
  6. Step 6: Final answer
    x = 349.04

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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.