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Finding the Fourth Proportional to 1,690.41, 2,535.51 and 536.16

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Solution

The fourth proportional to 1,690.41, 2,535.51 and 536.16 is: 804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.41 : 2,535.51 = 536.16 : x
  2. Step 2: Convert to fraction form
    1,690.41/2,535.51 = 536.16/x
  3. Step 3: Cross multiply
    1,690.41x = 2,535.51 × 536.16
  4. Step 4: Simplify right side
    1,690.41x = 1,359,439.04
  5. Step 5: Solve for x
    x = 1,359,439.04/1,690.41
  6. Step 6: Final answer
    x = 804.21

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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.