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Finding the Fourth Proportional to 667.31, 920.19 and 574.37

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Solution

The fourth proportional to 667.31, 920.19 and 574.37 is: 792.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.31 : 920.19 = 574.37 : x
  2. Step 2: Convert to fraction form
    667.31/920.19 = 574.37/x
  3. Step 3: Cross multiply
    667.31x = 920.19 × 574.37
  4. Step 4: Simplify right side
    667.31x = 528,529.53
  5. Step 5: Solve for x
    x = 528,529.53/667.31
  6. Step 6: Final answer
    x = 792.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.