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Finding the Fourth Proportional to 503.33, 695.03 and 487.85

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Solution

The fourth proportional to 503.33, 695.03 and 487.85 is: 673.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.33 : 695.03 = 487.85 : x
  2. Step 2: Convert to fraction form
    503.33/695.03 = 487.85/x
  3. Step 3: Cross multiply
    503.33x = 695.03 × 487.85
  4. Step 4: Simplify right side
    503.33x = 339,064.47
  5. Step 5: Solve for x
    x = 339,064.47/503.33
  6. Step 6: Final answer
    x = 673.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.