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Finding the Fourth Proportional to 1,164.02, 1,605.42 and 722.06

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Solution

The fourth proportional to 1,164.02, 1,605.42 and 722.06 is: 995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.02 : 1,605.42 = 722.06 : x
  2. Step 2: Convert to fraction form
    1,164.02/1,605.42 = 722.06/x
  3. Step 3: Cross multiply
    1,164.02x = 1,605.42 × 722.06
  4. Step 4: Simplify right side
    1,164.02x = 1,159,209.57
  5. Step 5: Solve for x
    x = 1,159,209.57/1,164.02
  6. Step 6: Final answer
    x = 995.87

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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.