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Finding the Fourth Proportional to 1,559.52, 2,340.54 and 829.62

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Solution

The fourth proportional to 1,559.52, 2,340.54 and 829.62 is: 1,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.52 : 2,340.54 = 829.62 : x
  2. Step 2: Convert to fraction form
    1,559.52/2,340.54 = 829.62/x
  3. Step 3: Cross multiply
    1,559.52x = 2,340.54 × 829.62
  4. Step 4: Simplify right side
    1,559.52x = 1,941,758.79
  5. Step 5: Solve for x
    x = 1,941,758.79/1,559.52
  6. Step 6: Final answer
    x = 1,245.10

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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.