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Finding the Fourth Proportional to 356.59, 534.97 and 317.81

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Solution

The fourth proportional to 356.59, 534.97 and 317.81 is: 476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.59 : 534.97 = 317.81 : x
  2. Step 2: Convert to fraction form
    356.59/534.97 = 317.81/x
  3. Step 3: Cross multiply
    356.59x = 534.97 × 317.81
  4. Step 4: Simplify right side
    356.59x = 170,015.35
  5. Step 5: Solve for x
    x = 170,015.35/356.59
  6. Step 6: Final answer
    x = 476.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.