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Finding the Fourth Proportional to 961.55, 1,326.96 and 568.58

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Solution

The fourth proportional to 961.55, 1,326.96 and 568.58 is: 784.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.55 : 1,326.96 = 568.58 : x
  2. Step 2: Convert to fraction form
    961.55/1,326.96 = 568.58/x
  3. Step 3: Cross multiply
    961.55x = 1,326.96 × 568.58
  4. Step 4: Simplify right side
    961.55x = 754,488.37
  5. Step 5: Solve for x
    x = 754,488.37/961.55
  6. Step 6: Final answer
    x = 784.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.