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Finding the Fourth Proportional to 317.67, 475.21 and 240.06

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Solution

The fourth proportional to 317.67, 475.21 and 240.06 is: 359.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.67 : 475.21 = 240.06 : x
  2. Step 2: Convert to fraction form
    317.67/475.21 = 240.06/x
  3. Step 3: Cross multiply
    317.67x = 475.21 × 240.06
  4. Step 4: Simplify right side
    317.67x = 114,079.21
  5. Step 5: Solve for x
    x = 114,079.21/317.67
  6. Step 6: Final answer
    x = 359.11

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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.