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Finding the Fourth Proportional to 494.03, 681.58 and 317.02

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Solution

The fourth proportional to 494.03, 681.58 and 317.02 is: 437.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.03 : 681.58 = 317.02 : x
  2. Step 2: Convert to fraction form
    494.03/681.58 = 317.02/x
  3. Step 3: Cross multiply
    494.03x = 681.58 × 317.02
  4. Step 4: Simplify right side
    494.03x = 216,074.49
  5. Step 5: Solve for x
    x = 216,074.49/494.03
  6. Step 6: Final answer
    x = 437.37

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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.