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Finding the Fourth Proportional to 667.08, 919.72 and 547.01

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Solution

The fourth proportional to 667.08, 919.72 and 547.01 is: 754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.08 : 919.72 = 547.01 : x
  2. Step 2: Convert to fraction form
    667.08/919.72 = 547.01/x
  3. Step 3: Cross multiply
    667.08x = 919.72 × 547.01
  4. Step 4: Simplify right side
    667.08x = 503,096.04
  5. Step 5: Solve for x
    x = 503,096.04/667.08
  6. Step 6: Final answer
    x = 754.18

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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.