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Finding the Fourth Proportional to 941.94, 1,415.07 and 654.66

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Solution

The fourth proportional to 941.94, 1,415.07 and 654.66 is: 983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.94 : 1,415.07 = 654.66 : x
  2. Step 2: Convert to fraction form
    941.94/1,415.07 = 654.66/x
  3. Step 3: Cross multiply
    941.94x = 1,415.07 × 654.66
  4. Step 4: Simplify right side
    941.94x = 926,389.73
  5. Step 5: Solve for x
    x = 926,389.73/941.94
  6. Step 6: Final answer
    x = 983.49

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Double scale
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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.