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Finding the Fourth Proportional to 491.68, 736.82 and 433.78

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Solution

The fourth proportional to 491.68, 736.82 and 433.78 is: 650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.68 : 736.82 = 433.78 : x
  2. Step 2: Convert to fraction form
    491.68/736.82 = 433.78/x
  3. Step 3: Cross multiply
    491.68x = 736.82 × 433.78
  4. Step 4: Simplify right side
    491.68x = 319,617.78
  5. Step 5: Solve for x
    x = 319,617.78/491.68
  6. Step 6: Final answer
    x = 650.05

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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.