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Finding the Fourth Proportional to 681.77, 935.16 and 675.90

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Solution

The fourth proportional to 681.77, 935.16 and 675.90 is: 927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.77 : 935.16 = 675.90 : x
  2. Step 2: Convert to fraction form
    681.77/935.16 = 675.90/x
  3. Step 3: Cross multiply
    681.77x = 935.16 × 675.90
  4. Step 4: Simplify right side
    681.77x = 632,074.64
  5. Step 5: Solve for x
    x = 632,074.64/681.77
  6. Step 6: Final answer
    x = 927.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.