Home / 1,555.13-2,332.23-459.23

Finding the Fourth Proportional to 1,555.13, 2,332.23 and 459.23

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Solution

The fourth proportional to 1,555.13, 2,332.23 and 459.23 is: 688.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.13 : 2,332.23 = 459.23 : x
  2. Step 2: Convert to fraction form
    1,555.13/2,332.23 = 459.23/x
  3. Step 3: Cross multiply
    1,555.13x = 2,332.23 × 459.23
  4. Step 4: Simplify right side
    1,555.13x = 1,071,029.98
  5. Step 5: Solve for x
    x = 1,071,029.98/1,555.13
  6. Step 6: Final answer
    x = 688.71

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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.