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Finding the Fourth Proportional to 1,093.98, 1,641.45 and 801.76

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Solution

The fourth proportional to 1,093.98, 1,641.45 and 801.76 is: 1,202.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093.98 : 1,641.45 = 801.76 : x
  2. Step 2: Convert to fraction form
    1,093.98/1,641.45 = 801.76/x
  3. Step 3: Cross multiply
    1,093.98x = 1,641.45 × 801.76
  4. Step 4: Simplify right side
    1,093.98x = 1,316,048.95
  5. Step 5: Solve for x
    x = 1,316,048.95/1,093.98
  6. Step 6: Final answer
    x = 1,202.99

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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.