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Finding the Fourth Proportional to 1,604.88, 2,407.31 and 578.88

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Solution

The fourth proportional to 1,604.88, 2,407.31 and 578.88 is: 868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,604.88 : 2,407.31 = 578.88 : x
  2. Step 2: Convert to fraction form
    1,604.88/2,407.31 = 578.88/x
  3. Step 3: Cross multiply
    1,604.88x = 2,407.31 × 578.88
  4. Step 4: Simplify right side
    1,604.88x = 1,393,533.02
  5. Step 5: Solve for x
    x = 1,393,533.02/1,604.88
  6. Step 6: Final answer
    x = 868.31

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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.