Home / 1,555.24-2,332.88-459.71

Finding the Fourth Proportional to 1,555.24, 2,332.88 and 459.71

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Solution

The fourth proportional to 1,555.24, 2,332.88 and 459.71 is: 689.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.24 : 2,332.88 = 459.71 : x
  2. Step 2: Convert to fraction form
    1,555.24/2,332.88 = 459.71/x
  3. Step 3: Cross multiply
    1,555.24x = 2,332.88 × 459.71
  4. Step 4: Simplify right side
    1,555.24x = 1,072,448.26
  5. Step 5: Solve for x
    x = 1,072,448.26/1,555.24
  6. Step 6: Final answer
    x = 689.57

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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.