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Finding the Fourth Proportional to 1,015.37, 1,401.21 and 573.26

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Solution

The fourth proportional to 1,015.37, 1,401.21 and 573.26 is: 791.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.37 : 1,401.21 = 573.26 : x
  2. Step 2: Convert to fraction form
    1,015.37/1,401.21 = 573.26/x
  3. Step 3: Cross multiply
    1,015.37x = 1,401.21 × 573.26
  4. Step 4: Simplify right side
    1,015.37x = 803,264.85
  5. Step 5: Solve for x
    x = 803,264.85/1,015.37
  6. Step 6: Final answer
    x = 791.10

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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.