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Finding the Fourth Proportional to 504.51, 696.24 and 308.09

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Solution

The fourth proportional to 504.51, 696.24 and 308.09 is: 425.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.51 : 696.24 = 308.09 : x
  2. Step 2: Convert to fraction form
    504.51/696.24 = 308.09/x
  3. Step 3: Cross multiply
    504.51x = 696.24 × 308.09
  4. Step 4: Simplify right side
    504.51x = 214,501.10
  5. Step 5: Solve for x
    x = 214,501.10/504.51
  6. Step 6: Final answer
    x = 425.17

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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.