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Finding the Fourth Proportional to 371.07, 556.37 and 317.07

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Solution

The fourth proportional to 371.07, 556.37 and 317.07 is: 475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.07 : 556.37 = 317.07 : x
  2. Step 2: Convert to fraction form
    371.07/556.37 = 317.07/x
  3. Step 3: Cross multiply
    371.07x = 556.37 × 317.07
  4. Step 4: Simplify right side
    371.07x = 176,406.65
  5. Step 5: Solve for x
    x = 176,406.65/371.07
  6. Step 6: Final answer
    x = 475.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.