Home / 1,045.64-1,566.84-680.60

Finding the Fourth Proportional to 1,045.64, 1,566.84 and 680.60

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Solution

The fourth proportional to 1,045.64, 1,566.84 and 680.60 is: 1,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.64 : 1,566.84 = 680.60 : x
  2. Step 2: Convert to fraction form
    1,045.64/1,566.84 = 680.60/x
  3. Step 3: Cross multiply
    1,045.64x = 1,566.84 × 680.60
  4. Step 4: Simplify right side
    1,045.64x = 1,066,391.30
  5. Step 5: Solve for x
    x = 1,066,391.30/1,045.64
  6. Step 6: Final answer
    x = 1,019.85

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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.