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Finding the Fourth Proportional to 564.74, 847.09 and 317.93

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Solution

The fourth proportional to 564.74, 847.09 and 317.93 is: 476.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.74 : 847.09 = 317.93 : x
  2. Step 2: Convert to fraction form
    564.74/847.09 = 317.93/x
  3. Step 3: Cross multiply
    564.74x = 847.09 × 317.93
  4. Step 4: Simplify right side
    564.74x = 269,313.73
  5. Step 5: Solve for x
    x = 269,313.73/564.74
  6. Step 6: Final answer
    x = 476.89

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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.