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Finding the Fourth Proportional to 498.28, 747.32 and 173.74

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Solution

The fourth proportional to 498.28, 747.32 and 173.74 is: 260.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.28 : 747.32 = 173.74 : x
  2. Step 2: Convert to fraction form
    498.28/747.32 = 173.74/x
  3. Step 3: Cross multiply
    498.28x = 747.32 × 173.74
  4. Step 4: Simplify right side
    498.28x = 129,838.51
  5. Step 5: Solve for x
    x = 129,838.51/498.28
  6. Step 6: Final answer
    x = 260.57

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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.