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Finding the Fourth Proportional to 207.51, 309.32 and 205.08

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Solution

The fourth proportional to 207.51, 309.32 and 205.08 is: 305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.51 : 309.32 = 205.08 : x
  2. Step 2: Convert to fraction form
    207.51/309.32 = 205.08/x
  3. Step 3: Cross multiply
    207.51x = 309.32 × 205.08
  4. Step 4: Simplify right side
    207.51x = 63,434.32
  5. Step 5: Solve for x
    x = 63,434.32/207.51
  6. Step 6: Final answer
    x = 305.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.