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Finding the Fourth Proportional to 504.80, 696.40 and 327.45

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Solution

The fourth proportional to 504.80, 696.40 and 327.45 is: 451.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.80 : 696.40 = 327.45 : x
  2. Step 2: Convert to fraction form
    504.80/696.40 = 327.45/x
  3. Step 3: Cross multiply
    504.80x = 696.40 × 327.45
  4. Step 4: Simplify right side
    504.80x = 228,036.18
  5. Step 5: Solve for x
    x = 228,036.18/504.80
  6. Step 6: Final answer
    x = 451.74

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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.