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Finding the Fourth Proportional to 1,334.18, 2,000.74 and 553.65

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Solution

The fourth proportional to 1,334.18, 2,000.74 and 553.65 is: 830.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,334.18 : 2,000.74 = 553.65 : x
  2. Step 2: Convert to fraction form
    1,334.18/2,000.74 = 553.65/x
  3. Step 3: Cross multiply
    1,334.18x = 2,000.74 × 553.65
  4. Step 4: Simplify right side
    1,334.18x = 1,107,706.93
  5. Step 5: Solve for x
    x = 1,107,706.93/1,334.18
  6. Step 6: Final answer
    x = 830.25

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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.