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Finding the Fourth Proportional to 942.63, 1,411.68 and 616.20

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Solution

The fourth proportional to 942.63, 1,411.68 and 616.20 is: 922.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.63 : 1,411.68 = 616.20 : x
  2. Step 2: Convert to fraction form
    942.63/1,411.68 = 616.20/x
  3. Step 3: Cross multiply
    942.63x = 1,411.68 × 616.20
  4. Step 4: Simplify right side
    942.63x = 869,877.22
  5. Step 5: Solve for x
    x = 869,877.22/942.63
  6. Step 6: Final answer
    x = 922.82

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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.