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Finding the Fourth Proportional to 952.79, 1,429.17 and 259.40

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Solution

The fourth proportional to 952.79, 1,429.17 and 259.40 is: 389.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.79 : 1,429.17 = 259.40 : x
  2. Step 2: Convert to fraction form
    952.79/1,429.17 = 259.40/x
  3. Step 3: Cross multiply
    952.79x = 1,429.17 × 259.40
  4. Step 4: Simplify right side
    952.79x = 370,719.55
  5. Step 5: Solve for x
    x = 370,719.55/952.79
  6. Step 6: Final answer
    x = 389.09

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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.