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Finding the Fourth Proportional to 498.74, 747.62 and 190.50

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Solution

The fourth proportional to 498.74, 747.62 and 190.50 is: 285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.74 : 747.62 = 190.50 : x
  2. Step 2: Convert to fraction form
    498.74/747.62 = 190.50/x
  3. Step 3: Cross multiply
    498.74x = 747.62 × 190.50
  4. Step 4: Simplify right side
    498.74x = 142,420.66
  5. Step 5: Solve for x
    x = 142,420.66/498.74
  6. Step 6: Final answer
    x = 285.56

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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.