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Finding the Fourth Proportional to 677.24, 934.38 and 470.36

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Solution

The fourth proportional to 677.24, 934.38 and 470.36 is: 648.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.24 : 934.38 = 470.36 : x
  2. Step 2: Convert to fraction form
    677.24/934.38 = 470.36/x
  3. Step 3: Cross multiply
    677.24x = 934.38 × 470.36
  4. Step 4: Simplify right side
    677.24x = 439,494.98
  5. Step 5: Solve for x
    x = 439,494.98/677.24
  6. Step 6: Final answer
    x = 648.95

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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.