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Finding the Fourth Proportional to 886.80, 1,330.16 and 366.66

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Solution

The fourth proportional to 886.80, 1,330.16 and 366.66 is: 549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.80 : 1,330.16 = 366.66 : x
  2. Step 2: Convert to fraction form
    886.80/1,330.16 = 366.66/x
  3. Step 3: Cross multiply
    886.80x = 1,330.16 × 366.66
  4. Step 4: Simplify right side
    886.80x = 487,707.98
  5. Step 5: Solve for x
    x = 487,707.98/886.80
  6. Step 6: Final answer
    x = 549.97

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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.