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Finding the Fourth Proportional to 667.02, 919.98 and 433.74

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Solution

The fourth proportional to 667.02, 919.98 and 433.74 is: 598.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.02 : 919.98 = 433.74 : x
  2. Step 2: Convert to fraction form
    667.02/919.98 = 433.74/x
  3. Step 3: Cross multiply
    667.02x = 919.98 × 433.74
  4. Step 4: Simplify right side
    667.02x = 399,032.13
  5. Step 5: Solve for x
    x = 399,032.13/667.02
  6. Step 6: Final answer
    x = 598.23

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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.