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Finding the Fourth Proportional to 499.73, 689.11 and 430.03

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Solution

The fourth proportional to 499.73, 689.11 and 430.03 is: 592.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.73 : 689.11 = 430.03 : x
  2. Step 2: Convert to fraction form
    499.73/689.11 = 430.03/x
  3. Step 3: Cross multiply
    499.73x = 689.11 × 430.03
  4. Step 4: Simplify right side
    499.73x = 296,335.18
  5. Step 5: Solve for x
    x = 296,335.18/499.73
  6. Step 6: Final answer
    x = 592.99

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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.