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Finding the Fourth Proportional to 1,244.08, 1,866.12 and 730

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Solution

The fourth proportional to 1,244.08, 1,866.12 and 730 is: 1,095

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.08 : 1,866.12 = 730 : x
  2. Step 2: Convert to fraction form
    1,244.08/1,866.12 = 730/x
  3. Step 3: Cross multiply
    1,244.08x = 1,866.12 × 730
  4. Step 4: Simplify right side
    1,244.08x = 1,362,267.60
  5. Step 5: Solve for x
    x = 1,362,267.60/1,244.08
  6. Step 6: Final answer
    x = 1,095

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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.