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Finding the Fourth Proportional to 677.51, 934.99 and 415.38

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Solution

The fourth proportional to 677.51, 934.99 and 415.38 is: 573.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.51 : 934.99 = 415.38 : x
  2. Step 2: Convert to fraction form
    677.51/934.99 = 415.38/x
  3. Step 3: Cross multiply
    677.51x = 934.99 × 415.38
  4. Step 4: Simplify right side
    677.51x = 388,369.39
  5. Step 5: Solve for x
    x = 388,369.39/677.51
  6. Step 6: Final answer
    x = 573.23

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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.