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Finding the Fourth Proportional to 677.24, 934.30 and 397.56

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Solution

The fourth proportional to 677.24, 934.30 and 397.56 is: 548.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.24 : 934.30 = 397.56 : x
  2. Step 2: Convert to fraction form
    677.24/934.30 = 397.56/x
  3. Step 3: Cross multiply
    677.24x = 934.30 × 397.56
  4. Step 4: Simplify right side
    677.24x = 371,440.31
  5. Step 5: Solve for x
    x = 371,440.31/677.24
  6. Step 6: Final answer
    x = 548.46

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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.