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Finding the Fourth Proportional to 677.63, 935.13 and 445.16

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Solution

The fourth proportional to 677.63, 935.13 and 445.16 is: 614.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.63 : 935.13 = 445.16 : x
  2. Step 2: Convert to fraction form
    677.63/935.13 = 445.16/x
  3. Step 3: Cross multiply
    677.63x = 935.13 × 445.16
  4. Step 4: Simplify right side
    677.63x = 416,277.80
  5. Step 5: Solve for x
    x = 416,277.80/677.63
  6. Step 6: Final answer
    x = 614.32

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Double scale
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1.5x scale

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.