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Finding the Fourth Proportional to 1,555.11, 2,332.62 and 630.65

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Solution

The fourth proportional to 1,555.11, 2,332.62 and 630.65 is: 945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.11 : 2,332.62 = 630.65 : x
  2. Step 2: Convert to fraction form
    1,555.11/2,332.62 = 630.65/x
  3. Step 3: Cross multiply
    1,555.11x = 2,332.62 × 630.65
  4. Step 4: Simplify right side
    1,555.11x = 1,471,053.56
  5. Step 5: Solve for x
    x = 1,471,053.56/1,555.11
  6. Step 6: Final answer
    x = 945.95

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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.