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Finding the Fourth Proportional to 501.40, 687.53 and 484.03

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Solution

The fourth proportional to 501.40, 687.53 and 484.03 is: 663.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.40 : 687.53 = 484.03 : x
  2. Step 2: Convert to fraction form
    501.40/687.53 = 484.03/x
  3. Step 3: Cross multiply
    501.40x = 687.53 × 484.03
  4. Step 4: Simplify right side
    501.40x = 332,785.15
  5. Step 5: Solve for x
    x = 332,785.15/501.40
  6. Step 6: Final answer
    x = 663.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.