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Finding the Fourth Proportional to 243.58, 333.93 and 242.87

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Solution

The fourth proportional to 243.58, 333.93 and 242.87 is: 332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.58 : 333.93 = 242.87 : x
  2. Step 2: Convert to fraction form
    243.58/333.93 = 242.87/x
  3. Step 3: Cross multiply
    243.58x = 333.93 × 242.87
  4. Step 4: Simplify right side
    243.58x = 81,101.58
  5. Step 5: Solve for x
    x = 81,101.58/243.58
  6. Step 6: Final answer
    x = 332.96

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.