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Finding the Fourth Proportional to 1,029.63, 1,544.84 and 619.07

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Solution

The fourth proportional to 1,029.63, 1,544.84 and 619.07 is: 928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.63 : 1,544.84 = 619.07 : x
  2. Step 2: Convert to fraction form
    1,029.63/1,544.84 = 619.07/x
  3. Step 3: Cross multiply
    1,029.63x = 1,544.84 × 619.07
  4. Step 4: Simplify right side
    1,029.63x = 956,355.60
  5. Step 5: Solve for x
    x = 956,355.60/1,029.63
  6. Step 6: Final answer
    x = 928.83

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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.