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Finding the Fourth Proportional to 877.45, 1,210.74 and 504.44

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Solution

The fourth proportional to 877.45, 1,210.74 and 504.44 is: 696.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.45 : 1,210.74 = 504.44 : x
  2. Step 2: Convert to fraction form
    877.45/1,210.74 = 504.44/x
  3. Step 3: Cross multiply
    877.45x = 1,210.74 × 504.44
  4. Step 4: Simplify right side
    877.45x = 610,745.69
  5. Step 5: Solve for x
    x = 610,745.69/877.45
  6. Step 6: Final answer
    x = 696.05

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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.