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Finding the Fourth Proportional to 317.36, 437.71 and 281.95

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Solution

The fourth proportional to 317.36, 437.71 and 281.95 is: 388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.36 : 437.71 = 281.95 : x
  2. Step 2: Convert to fraction form
    317.36/437.71 = 281.95/x
  3. Step 3: Cross multiply
    317.36x = 437.71 × 281.95
  4. Step 4: Simplify right side
    317.36x = 123,412.33
  5. Step 5: Solve for x
    x = 123,412.33/317.36
  6. Step 6: Final answer
    x = 388.87

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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.