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Finding the Fourth Proportional to 941.60, 1,300 and 605.65

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Solution

The fourth proportional to 941.60, 1,300 and 605.65 is: 836.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.60 : 1,300 = 605.65 : x
  2. Step 2: Convert to fraction form
    941.60/1,300 = 605.65/x
  3. Step 3: Cross multiply
    941.60x = 1,300 × 605.65
  4. Step 4: Simplify right side
    941.60x = 787,338.50
  5. Step 5: Solve for x
    x = 787,338.50/941.60
  6. Step 6: Final answer
    x = 836.18

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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.