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Finding the Fourth Proportional to 677.04, 934.64 and 428.48

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Solution

The fourth proportional to 677.04, 934.64 and 428.48 is: 591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.04 : 934.64 = 428.48 : x
  2. Step 2: Convert to fraction form
    677.04/934.64 = 428.48/x
  3. Step 3: Cross multiply
    677.04x = 934.64 × 428.48
  4. Step 4: Simplify right side
    677.04x = 400,474.55
  5. Step 5: Solve for x
    x = 400,474.55/677.04
  6. Step 6: Final answer
    x = 591.51

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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.