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Finding the Fourth Proportional to 904.94, 1,356.38 and 538.96

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Solution

The fourth proportional to 904.94, 1,356.38 and 538.96 is: 807.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.94 : 1,356.38 = 538.96 : x
  2. Step 2: Convert to fraction form
    904.94/1,356.38 = 538.96/x
  3. Step 3: Cross multiply
    904.94x = 1,356.38 × 538.96
  4. Step 4: Simplify right side
    904.94x = 731,032.52
  5. Step 5: Solve for x
    x = 731,032.52/904.94
  6. Step 6: Final answer
    x = 807.83

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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.