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Finding the Fourth Proportional to 961.54, 1,326.93 and 542.00

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Solution

The fourth proportional to 961.54, 1,326.93 and 542.00 is: 747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.54 : 1,326.93 = 542.00 : x
  2. Step 2: Convert to fraction form
    961.54/1,326.93 = 542.00/x
  3. Step 3: Cross multiply
    961.54x = 1,326.93 × 542.00
  4. Step 4: Simplify right side
    961.54x = 719,187.39
  5. Step 5: Solve for x
    x = 719,187.39/961.54
  6. Step 6: Final answer
    x = 747.95

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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.