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Finding the Fourth Proportional to 883.96, 1,326.62 and 611.95

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Solution

The fourth proportional to 883.96, 1,326.62 and 611.95 is: 918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.96 : 1,326.62 = 611.95 : x
  2. Step 2: Convert to fraction form
    883.96/1,326.62 = 611.95/x
  3. Step 3: Cross multiply
    883.96x = 1,326.62 × 611.95
  4. Step 4: Simplify right side
    883.96x = 811,825.11
  5. Step 5: Solve for x
    x = 811,825.11/883.96
  6. Step 6: Final answer
    x = 918.40

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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.