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Finding the Fourth Proportional to 355.59, 532.17 and 290.79

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Solution

The fourth proportional to 355.59, 532.17 and 290.79 is: 435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.59 : 532.17 = 290.79 : x
  2. Step 2: Convert to fraction form
    355.59/532.17 = 290.79/x
  3. Step 3: Cross multiply
    355.59x = 532.17 × 290.79
  4. Step 4: Simplify right side
    355.59x = 154,749.71
  5. Step 5: Solve for x
    x = 154,749.71/355.59
  6. Step 6: Final answer
    x = 435.19

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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.