Home / 1,555.10-2,332.11-459.17

Finding the Fourth Proportional to 1,555.10, 2,332.11 and 459.17

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Solution

The fourth proportional to 1,555.10, 2,332.11 and 459.17 is: 688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.10 : 2,332.11 = 459.17 : x
  2. Step 2: Convert to fraction form
    1,555.10/2,332.11 = 459.17/x
  3. Step 3: Cross multiply
    1,555.10x = 2,332.11 × 459.17
  4. Step 4: Simplify right side
    1,555.10x = 1,070,834.95
  5. Step 5: Solve for x
    x = 1,070,834.95/1,555.10
  6. Step 6: Final answer
    x = 688.60

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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.