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Finding the Fourth Proportional to 1,573.13, 2,359.70 and 418.88

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Solution

The fourth proportional to 1,573.13, 2,359.70 and 418.88 is: 628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.13 : 2,359.70 = 418.88 : x
  2. Step 2: Convert to fraction form
    1,573.13/2,359.70 = 418.88/x
  3. Step 3: Cross multiply
    1,573.13x = 2,359.70 × 418.88
  4. Step 4: Simplify right side
    1,573.13x = 988,417.24
  5. Step 5: Solve for x
    x = 988,417.24/1,573.13
  6. Step 6: Final answer
    x = 628.31

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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.