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Finding the Fourth Proportional to 940.57, 1,297.85 and 591.19

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Solution

The fourth proportional to 940.57, 1,297.85 and 591.19 is: 815.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.57 : 1,297.85 = 591.19 : x
  2. Step 2: Convert to fraction form
    940.57/1,297.85 = 591.19/x
  3. Step 3: Cross multiply
    940.57x = 1,297.85 × 591.19
  4. Step 4: Simplify right side
    940.57x = 767,269.74
  5. Step 5: Solve for x
    x = 767,269.74/940.57
  6. Step 6: Final answer
    x = 815.75

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Double scale
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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.