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Finding the Fourth Proportional to 1,166.22, 1,608.48 and 917.19

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Solution

The fourth proportional to 1,166.22, 1,608.48 and 917.19 is: 1,265.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.22 : 1,608.48 = 917.19 : x
  2. Step 2: Convert to fraction form
    1,166.22/1,608.48 = 917.19/x
  3. Step 3: Cross multiply
    1,166.22x = 1,608.48 × 917.19
  4. Step 4: Simplify right side
    1,166.22x = 1,475,281.77
  5. Step 5: Solve for x
    x = 1,475,281.77/1,166.22
  6. Step 6: Final answer
    x = 1,265.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.