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Finding the Fourth Proportional to 677.30, 934.62 and 397.52

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Solution

The fourth proportional to 677.30, 934.62 and 397.52 is: 548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.30 : 934.62 = 397.52 : x
  2. Step 2: Convert to fraction form
    677.30/934.62 = 397.52/x
  3. Step 3: Cross multiply
    677.30x = 934.62 × 397.52
  4. Step 4: Simplify right side
    677.30x = 371,530.14
  5. Step 5: Solve for x
    x = 371,530.14/677.30
  6. Step 6: Final answer
    x = 548.55

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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.