Home / 1,555.30-2,332.61-515.06

Finding the Fourth Proportional to 1,555.30, 2,332.61 and 515.06

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Solution

The fourth proportional to 1,555.30, 2,332.61 and 515.06 is: 772.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.30 : 2,332.61 = 515.06 : x
  2. Step 2: Convert to fraction form
    1,555.30/2,332.61 = 515.06/x
  3. Step 3: Cross multiply
    1,555.30x = 2,332.61 × 515.06
  4. Step 4: Simplify right side
    1,555.30x = 1,201,434.11
  5. Step 5: Solve for x
    x = 1,201,434.11/1,555.30
  6. Step 6: Final answer
    x = 772.48

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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.