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Finding the Fourth Proportional to 2,290.31, 3,435.46 and 558.93

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Solution

The fourth proportional to 2,290.31, 3,435.46 and 558.93 is: 838.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.31 : 3,435.46 = 558.93 : x
  2. Step 2: Convert to fraction form
    2,290.31/3,435.46 = 558.93/x
  3. Step 3: Cross multiply
    2,290.31x = 3,435.46 × 558.93
  4. Step 4: Simplify right side
    2,290.31x = 1,920,178.86
  5. Step 5: Solve for x
    x = 1,920,178.86/2,290.31
  6. Step 6: Final answer
    x = 838.39

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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.