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Finding the Fourth Proportional to 1,444.38, 2,166.92 and 520.00

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Solution

The fourth proportional to 1,444.38, 2,166.92 and 520.00 is: 780.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.38 : 2,166.92 = 520.00 : x
  2. Step 2: Convert to fraction form
    1,444.38/2,166.92 = 520.00/x
  3. Step 3: Cross multiply
    1,444.38x = 2,166.92 × 520.00
  4. Step 4: Simplify right side
    1,444.38x = 1,126,792.33
  5. Step 5: Solve for x
    x = 1,126,792.33/1,444.38
  6. Step 6: Final answer
    x = 780.12

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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.