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Finding the Fourth Proportional to 1,555.39, 2,332.91 and 444.87

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Solution

The fourth proportional to 1,555.39, 2,332.91 and 444.87 is: 667.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.39 : 2,332.91 = 444.87 : x
  2. Step 2: Convert to fraction form
    1,555.39/2,332.91 = 444.87/x
  3. Step 3: Cross multiply
    1,555.39x = 2,332.91 × 444.87
  4. Step 4: Simplify right side
    1,555.39x = 1,037,842.78
  5. Step 5: Solve for x
    x = 1,037,842.78/1,555.39
  6. Step 6: Final answer
    x = 667.26

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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.