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Finding the Fourth Proportional to 886.04, 1,222.75 and 513.08

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Solution

The fourth proportional to 886.04, 1,222.75 and 513.08 is: 708.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.04 : 1,222.75 = 513.08 : x
  2. Step 2: Convert to fraction form
    886.04/1,222.75 = 513.08/x
  3. Step 3: Cross multiply
    886.04x = 1,222.75 × 513.08
  4. Step 4: Simplify right side
    886.04x = 627,371.67
  5. Step 5: Solve for x
    x = 627,371.67/886.04
  6. Step 6: Final answer
    x = 708.06

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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.