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Finding the Fourth Proportional to 1,019.35, 1,526.97 and 671.83

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Solution

The fourth proportional to 1,019.35, 1,526.97 and 671.83 is: 1,006.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.35 : 1,526.97 = 671.83 : x
  2. Step 2: Convert to fraction form
    1,019.35/1,526.97 = 671.83/x
  3. Step 3: Cross multiply
    1,019.35x = 1,526.97 × 671.83
  4. Step 4: Simplify right side
    1,019.35x = 1,025,859.18
  5. Step 5: Solve for x
    x = 1,025,859.18/1,019.35
  6. Step 6: Final answer
    x = 1,006.38

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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.