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Finding the Fourth Proportional to 1,095.80, 1,641.30 and 951.80

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Solution

The fourth proportional to 1,095.80, 1,641.30 and 951.80 is: 1,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.80 : 1,641.30 = 951.80 : x
  2. Step 2: Convert to fraction form
    1,095.80/1,641.30 = 951.80/x
  3. Step 3: Cross multiply
    1,095.80x = 1,641.30 × 951.80
  4. Step 4: Simplify right side
    1,095.80x = 1,562,189.34
  5. Step 5: Solve for x
    x = 1,562,189.34/1,095.80
  6. Step 6: Final answer
    x = 1,425.62

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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.