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Finding the Fourth Proportional to 1,014.11, 1,520.63 and 520.32

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Solution

The fourth proportional to 1,014.11, 1,520.63 and 520.32 is: 780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.11 : 1,520.63 = 520.32 : x
  2. Step 2: Convert to fraction form
    1,014.11/1,520.63 = 520.32/x
  3. Step 3: Cross multiply
    1,014.11x = 1,520.63 × 520.32
  4. Step 4: Simplify right side
    1,014.11x = 791,208.75
  5. Step 5: Solve for x
    x = 791,208.75/1,014.11
  6. Step 6: Final answer
    x = 780.20

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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.