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Finding the Fourth Proportional to 356.80, 532.19 and 325.36

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Solution

The fourth proportional to 356.80, 532.19 and 325.36 is: 485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.80 : 532.19 = 325.36 : x
  2. Step 2: Convert to fraction form
    356.80/532.19 = 325.36/x
  3. Step 3: Cross multiply
    356.80x = 532.19 × 325.36
  4. Step 4: Simplify right side
    356.80x = 173,153.34
  5. Step 5: Solve for x
    x = 173,153.34/356.80
  6. Step 6: Final answer
    x = 485.30

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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.