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Finding the Fourth Proportional to 609.46, 914.59 and 317.23

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Solution

The fourth proportional to 609.46, 914.59 and 317.23 is: 476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.46 : 914.59 = 317.23 : x
  2. Step 2: Convert to fraction form
    609.46/914.59 = 317.23/x
  3. Step 3: Cross multiply
    609.46x = 914.59 × 317.23
  4. Step 4: Simplify right side
    609.46x = 290,130.81
  5. Step 5: Solve for x
    x = 290,130.81/609.46
  6. Step 6: Final answer
    x = 476.05

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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.