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Finding the Fourth Proportional to 243.09, 364.52 and 89.00

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Solution

The fourth proportional to 243.09, 364.52 and 89.00 is: 133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.09 : 364.52 = 89.00 : x
  2. Step 2: Convert to fraction form
    243.09/364.52 = 89.00/x
  3. Step 3: Cross multiply
    243.09x = 364.52 × 89.00
  4. Step 4: Simplify right side
    243.09x = 32,440.01
  5. Step 5: Solve for x
    x = 32,440.01/243.09
  6. Step 6: Final answer
    x = 133.45

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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.