Home / 1,433.18-2,149.90-555.40

Finding the Fourth Proportional to 1,433.18, 2,149.90 and 555.40

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Solution

The fourth proportional to 1,433.18, 2,149.90 and 555.40 is: 833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.18 : 2,149.90 = 555.40 : x
  2. Step 2: Convert to fraction form
    1,433.18/2,149.90 = 555.40/x
  3. Step 3: Cross multiply
    1,433.18x = 2,149.90 × 555.40
  4. Step 4: Simplify right side
    1,433.18x = 1,194,054.46
  5. Step 5: Solve for x
    x = 1,194,054.46/1,433.18
  6. Step 6: Final answer
    x = 833.15

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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.