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Finding the Fourth Proportional to 492.15, 738.26 and 434.89

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Solution

The fourth proportional to 492.15, 738.26 and 434.89 is: 652.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.15 : 738.26 = 434.89 : x
  2. Step 2: Convert to fraction form
    492.15/738.26 = 434.89/x
  3. Step 3: Cross multiply
    492.15x = 738.26 × 434.89
  4. Step 4: Simplify right side
    492.15x = 321,066.79
  5. Step 5: Solve for x
    x = 321,066.79/492.15
  6. Step 6: Final answer
    x = 652.37

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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.