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Finding the Fourth Proportional to 904.64, 1,356.95 and 327.38

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Solution

The fourth proportional to 904.64, 1,356.95 and 327.38 is: 491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.64 : 1,356.95 = 327.38 : x
  2. Step 2: Convert to fraction form
    904.64/1,356.95 = 327.38/x
  3. Step 3: Cross multiply
    904.64x = 1,356.95 × 327.38
  4. Step 4: Simplify right side
    904.64x = 444,232.32
  5. Step 5: Solve for x
    x = 444,232.32/904.64
  6. Step 6: Final answer
    x = 491.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.