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Finding the Fourth Proportional to 904.93, 1,356.33 and 416.96

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Solution

The fourth proportional to 904.93, 1,356.33 and 416.96 is: 624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.93 : 1,356.33 = 416.96 : x
  2. Step 2: Convert to fraction form
    904.93/1,356.33 = 416.96/x
  3. Step 3: Cross multiply
    904.93x = 1,356.33 × 416.96
  4. Step 4: Simplify right side
    904.93x = 565,528.58
  5. Step 5: Solve for x
    x = 565,528.58/904.93
  6. Step 6: Final answer
    x = 624.94

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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.