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Finding the Fourth Proportional to 317.32, 475.66 and 134.83

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Solution

The fourth proportional to 317.32, 475.66 and 134.83 is: 202.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.32 : 475.66 = 134.83 : x
  2. Step 2: Convert to fraction form
    317.32/475.66 = 134.83/x
  3. Step 3: Cross multiply
    317.32x = 475.66 × 134.83
  4. Step 4: Simplify right side
    317.32x = 64,133.24
  5. Step 5: Solve for x
    x = 64,133.24/317.32
  6. Step 6: Final answer
    x = 202.11

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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.