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Finding the Fourth Proportional to 677.08, 934.20 and 464.48

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Solution

The fourth proportional to 677.08, 934.20 and 464.48 is: 640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.08 : 934.20 = 464.48 : x
  2. Step 2: Convert to fraction form
    677.08/934.20 = 464.48/x
  3. Step 3: Cross multiply
    677.08x = 934.20 × 464.48
  4. Step 4: Simplify right side
    677.08x = 433,917.22
  5. Step 5: Solve for x
    x = 433,917.22/677.08
  6. Step 6: Final answer
    x = 640.87

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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.