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Finding the Fourth Proportional to 506.51, 699.04 and 317.59

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Solution

The fourth proportional to 506.51, 699.04 and 317.59 is: 438.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.51 : 699.04 = 317.59 : x
  2. Step 2: Convert to fraction form
    506.51/699.04 = 317.59/x
  3. Step 3: Cross multiply
    506.51x = 699.04 × 317.59
  4. Step 4: Simplify right side
    506.51x = 222,010.70
  5. Step 5: Solve for x
    x = 222,010.70/506.51
  6. Step 6: Final answer
    x = 438.31

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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.