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Finding the Fourth Proportional to 1,639.48, 2,458.04 and 773.32

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Solution

The fourth proportional to 1,639.48, 2,458.04 and 773.32 is: 1,159.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.48 : 2,458.04 = 773.32 : x
  2. Step 2: Convert to fraction form
    1,639.48/2,458.04 = 773.32/x
  3. Step 3: Cross multiply
    1,639.48x = 2,458.04 × 773.32
  4. Step 4: Simplify right side
    1,639.48x = 1,900,851.49
  5. Step 5: Solve for x
    x = 1,900,851.49/1,639.48
  6. Step 6: Final answer
    x = 1,159.42

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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.