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Finding the Fourth Proportional to 488.69, 732.62 and 228.55

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Solution

The fourth proportional to 488.69, 732.62 and 228.55 is: 342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.69 : 732.62 = 228.55 : x
  2. Step 2: Convert to fraction form
    488.69/732.62 = 228.55/x
  3. Step 3: Cross multiply
    488.69x = 732.62 × 228.55
  4. Step 4: Simplify right side
    488.69x = 167,437.90
  5. Step 5: Solve for x
    x = 167,437.90/488.69
  6. Step 6: Final answer
    x = 342.63

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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.