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Finding the Fourth Proportional to 2,176.88, 3,264.70 and 616.78

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Solution

The fourth proportional to 2,176.88, 3,264.70 and 616.78 is: 924.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.88 : 3,264.70 = 616.78 : x
  2. Step 2: Convert to fraction form
    2,176.88/3,264.70 = 616.78/x
  3. Step 3: Cross multiply
    2,176.88x = 3,264.70 × 616.78
  4. Step 4: Simplify right side
    2,176.88x = 2,013,601.67
  5. Step 5: Solve for x
    x = 2,013,601.67/2,176.88
  6. Step 6: Final answer
    x = 924.99

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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.