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Finding the Fourth Proportional to 1,091.70, 1,637.26 and 536.13

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Solution

The fourth proportional to 1,091.70, 1,637.26 and 536.13 is: 804.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.70 : 1,637.26 = 536.13 : x
  2. Step 2: Convert to fraction form
    1,091.70/1,637.26 = 536.13/x
  3. Step 3: Cross multiply
    1,091.70x = 1,637.26 × 536.13
  4. Step 4: Simplify right side
    1,091.70x = 877,782.86
  5. Step 5: Solve for x
    x = 877,782.86/1,091.70
  6. Step 6: Final answer
    x = 804.05

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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.