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Finding the Fourth Proportional to 942.67, 1,411.95 and 576.35

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Solution

The fourth proportional to 942.67, 1,411.95 and 576.35 is: 863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.67 : 1,411.95 = 576.35 : x
  2. Step 2: Convert to fraction form
    942.67/1,411.95 = 576.35/x
  3. Step 3: Cross multiply
    942.67x = 1,411.95 × 576.35
  4. Step 4: Simplify right side
    942.67x = 813,777.38
  5. Step 5: Solve for x
    x = 813,777.38/942.67
  6. Step 6: Final answer
    x = 863.27

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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.