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Finding the Fourth Proportional to 1,166.64, 1,746.87 and 703.80

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Solution

The fourth proportional to 1,166.64, 1,746.87 and 703.80 is: 1,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.64 : 1,746.87 = 703.80 : x
  2. Step 2: Convert to fraction form
    1,166.64/1,746.87 = 703.80/x
  3. Step 3: Cross multiply
    1,166.64x = 1,746.87 × 703.80
  4. Step 4: Simplify right side
    1,166.64x = 1,229,447.11
  5. Step 5: Solve for x
    x = 1,229,447.11/1,166.64
  6. Step 6: Final answer
    x = 1,053.84

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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.