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Finding the Fourth Proportional to 496.44, 684 and 470

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Solution

The fourth proportional to 496.44, 684 and 470 is: 647.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.44 : 684 = 470 : x
  2. Step 2: Convert to fraction form
    496.44/684 = 470/x
  3. Step 3: Cross multiply
    496.44x = 684 × 470
  4. Step 4: Simplify right side
    496.44x = 321,480
  5. Step 5: Solve for x
    x = 321,480/496.44
  6. Step 6: Final answer
    x = 647.57

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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.