Home / 1,555.10-2,332.76-515.18

Finding the Fourth Proportional to 1,555.10, 2,332.76 and 515.18

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Solution

The fourth proportional to 1,555.10, 2,332.76 and 515.18 is: 772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.10 : 2,332.76 = 515.18 : x
  2. Step 2: Convert to fraction form
    1,555.10/2,332.76 = 515.18/x
  3. Step 3: Cross multiply
    1,555.10x = 2,332.76 × 515.18
  4. Step 4: Simplify right side
    1,555.10x = 1,201,777.06
  5. Step 5: Solve for x
    x = 1,201,777.06/1,555.10
  6. Step 6: Final answer
    x = 772.80

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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.