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Finding the Fourth Proportional to 1,808.04, 2,712.26 and 712.26

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Solution

The fourth proportional to 1,808.04, 2,712.26 and 712.26 is: 1,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.04 : 2,712.26 = 712.26 : x
  2. Step 2: Convert to fraction form
    1,808.04/2,712.26 = 712.26/x
  3. Step 3: Cross multiply
    1,808.04x = 2,712.26 × 712.26
  4. Step 4: Simplify right side
    1,808.04x = 1,931,834.31
  5. Step 5: Solve for x
    x = 1,931,834.31/1,808.04
  6. Step 6: Final answer
    x = 1,068.47

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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.