Home / 1,050.11-1,449.20-630.50

Finding the Fourth Proportional to 1,050.11, 1,449.20 and 630.50

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Solution

The fourth proportional to 1,050.11, 1,449.20 and 630.50 is: 870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.11 : 1,449.20 = 630.50 : x
  2. Step 2: Convert to fraction form
    1,050.11/1,449.20 = 630.50/x
  3. Step 3: Cross multiply
    1,050.11x = 1,449.20 × 630.50
  4. Step 4: Simplify right side
    1,050.11x = 913,716.98
  5. Step 5: Solve for x
    x = 913,716.98/1,050.11
  6. Step 6: Final answer
    x = 870.11

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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.