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Finding the Fourth Proportional to 724.02, 998.83 and 429.13

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Solution

The fourth proportional to 724.02, 998.83 and 429.13 is: 592.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.02 : 998.83 = 429.13 : x
  2. Step 2: Convert to fraction form
    724.02/998.83 = 429.13/x
  3. Step 3: Cross multiply
    724.02x = 998.83 × 429.13
  4. Step 4: Simplify right side
    724.02x = 428,624.08
  5. Step 5: Solve for x
    x = 428,624.08/724.02
  6. Step 6: Final answer
    x = 592.01

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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.