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Finding the Fourth Proportional to 957.29, 1,433.61 and 545.16

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Solution

The fourth proportional to 957.29, 1,433.61 and 545.16 is: 816.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.29 : 1,433.61 = 545.16 : x
  2. Step 2: Convert to fraction form
    957.29/1,433.61 = 545.16/x
  3. Step 3: Cross multiply
    957.29x = 1,433.61 × 545.16
  4. Step 4: Simplify right side
    957.29x = 781,546.83
  5. Step 5: Solve for x
    x = 781,546.83/957.29
  6. Step 6: Final answer
    x = 816.42

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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.