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Finding the Fourth Proportional to 1,017.03, 1,402.05 and 722.19

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Solution

The fourth proportional to 1,017.03, 1,402.05 and 722.19 is: 995.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.03 : 1,402.05 = 722.19 : x
  2. Step 2: Convert to fraction form
    1,017.03/1,402.05 = 722.19/x
  3. Step 3: Cross multiply
    1,017.03x = 1,402.05 × 722.19
  4. Step 4: Simplify right side
    1,017.03x = 1,012,546.49
  5. Step 5: Solve for x
    x = 1,012,546.49/1,017.03
  6. Step 6: Final answer
    x = 995.59

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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.