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Finding the Fourth Proportional to 497.51, 747.09 and 445.53

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Solution

The fourth proportional to 497.51, 747.09 and 445.53 is: 669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.51 : 747.09 = 445.53 : x
  2. Step 2: Convert to fraction form
    497.51/747.09 = 445.53/x
  3. Step 3: Cross multiply
    497.51x = 747.09 × 445.53
  4. Step 4: Simplify right side
    497.51x = 332,851.01
  5. Step 5: Solve for x
    x = 332,851.01/497.51
  6. Step 6: Final answer
    x = 669.04

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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.