Home / 1,310.66-1,965.99-615.35

Finding the Fourth Proportional to 1,310.66, 1,965.99 and 615.35

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Solution

The fourth proportional to 1,310.66, 1,965.99 and 615.35 is: 923.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.66 : 1,965.99 = 615.35 : x
  2. Step 2: Convert to fraction form
    1,310.66/1,965.99 = 615.35/x
  3. Step 3: Cross multiply
    1,310.66x = 1,965.99 × 615.35
  4. Step 4: Simplify right side
    1,310.66x = 1,209,774.11
  5. Step 5: Solve for x
    x = 1,209,774.11/1,310.66
  6. Step 6: Final answer
    x = 923.03

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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.