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Finding the Fourth Proportional to 1,589.55, 2,385.71 and 616.33

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Solution

The fourth proportional to 1,589.55, 2,385.71 and 616.33 is: 925.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.55 : 2,385.71 = 616.33 : x
  2. Step 2: Convert to fraction form
    1,589.55/2,385.71 = 616.33/x
  3. Step 3: Cross multiply
    1,589.55x = 2,385.71 × 616.33
  4. Step 4: Simplify right side
    1,589.55x = 1,470,384.64
  5. Step 5: Solve for x
    x = 1,470,384.64/1,589.55
  6. Step 6: Final answer
    x = 925.03

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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.