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Finding the Fourth Proportional to 493.07, 681.27 and 430.80

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Solution

The fourth proportional to 493.07, 681.27 and 430.80 is: 595.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.07 : 681.27 = 430.80 : x
  2. Step 2: Convert to fraction form
    493.07/681.27 = 430.80/x
  3. Step 3: Cross multiply
    493.07x = 681.27 × 430.80
  4. Step 4: Simplify right side
    493.07x = 293,491.12
  5. Step 5: Solve for x
    x = 293,491.12/493.07
  6. Step 6: Final answer
    x = 595.23

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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.