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Finding the Fourth Proportional to 1,078.30, 1,616.64 and 500.50

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Solution

The fourth proportional to 1,078.30, 1,616.64 and 500.50 is: 750.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.30 : 1,616.64 = 500.50 : x
  2. Step 2: Convert to fraction form
    1,078.30/1,616.64 = 500.50/x
  3. Step 3: Cross multiply
    1,078.30x = 1,616.64 × 500.50
  4. Step 4: Simplify right side
    1,078.30x = 809,128.32
  5. Step 5: Solve for x
    x = 809,128.32/1,078.30
  6. Step 6: Final answer
    x = 750.37

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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.