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Finding the Fourth Proportional to 1,655.55, 2,482.38 and 680.49

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Solution

The fourth proportional to 1,655.55, 2,482.38 and 680.49 is: 1,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.55 : 2,482.38 = 680.49 : x
  2. Step 2: Convert to fraction form
    1,655.55/2,482.38 = 680.49/x
  3. Step 3: Cross multiply
    1,655.55x = 2,482.38 × 680.49
  4. Step 4: Simplify right side
    1,655.55x = 1,689,234.77
  5. Step 5: Solve for x
    x = 1,689,234.77/1,655.55
  6. Step 6: Final answer
    x = 1,020.35

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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.