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Finding the Fourth Proportional to 507.62, 700.32 and 308.38

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Solution

The fourth proportional to 507.62, 700.32 and 308.38 is: 425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.62 : 700.32 = 308.38 : x
  2. Step 2: Convert to fraction form
    507.62/700.32 = 308.38/x
  3. Step 3: Cross multiply
    507.62x = 700.32 × 308.38
  4. Step 4: Simplify right side
    507.62x = 215,960.51
  5. Step 5: Solve for x
    x = 215,960.51/507.62
  6. Step 6: Final answer
    x = 425.44

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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.