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Finding the Fourth Proportional to 677.02, 934.28 and 397.30

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Solution

The fourth proportional to 677.02, 934.28 and 397.30 is: 548.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.02 : 934.28 = 397.30 : x
  2. Step 2: Convert to fraction form
    677.02/934.28 = 397.30/x
  3. Step 3: Cross multiply
    677.02x = 934.28 × 397.30
  4. Step 4: Simplify right side
    677.02x = 371,189.44
  5. Step 5: Solve for x
    x = 371,189.44/677.02
  6. Step 6: Final answer
    x = 548.27

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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.