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Finding the Fourth Proportional to 1,283.24, 1,924.86 and 358.79

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Solution

The fourth proportional to 1,283.24, 1,924.86 and 358.79 is: 538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.24 : 1,924.86 = 358.79 : x
  2. Step 2: Convert to fraction form
    1,283.24/1,924.86 = 358.79/x
  3. Step 3: Cross multiply
    1,283.24x = 1,924.86 × 358.79
  4. Step 4: Simplify right side
    1,283.24x = 690,624.43
  5. Step 5: Solve for x
    x = 690,624.43/1,283.24
  6. Step 6: Final answer
    x = 538.19

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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.