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Finding the Fourth Proportional to 1,019.89, 1,529.88 and 533.08

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Solution

The fourth proportional to 1,019.89, 1,529.88 and 533.08 is: 799.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.89 : 1,529.88 = 533.08 : x
  2. Step 2: Convert to fraction form
    1,019.89/1,529.88 = 533.08/x
  3. Step 3: Cross multiply
    1,019.89x = 1,529.88 × 533.08
  4. Step 4: Simplify right side
    1,019.89x = 815,548.43
  5. Step 5: Solve for x
    x = 815,548.43/1,019.89
  6. Step 6: Final answer
    x = 799.64

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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.