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Finding the Fourth Proportional to 459.96, 688.86 and 243.60

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Solution

The fourth proportional to 459.96, 688.86 and 243.60 is: 364.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.96 : 688.86 = 243.60 : x
  2. Step 2: Convert to fraction form
    459.96/688.86 = 243.60/x
  3. Step 3: Cross multiply
    459.96x = 688.86 × 243.60
  4. Step 4: Simplify right side
    459.96x = 167,806.30
  5. Step 5: Solve for x
    x = 167,806.30/459.96
  6. Step 6: Final answer
    x = 364.83

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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.