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Finding the Fourth Proportional to 1,049.99, 1,575.13 and 356.47

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Solution

The fourth proportional to 1,049.99, 1,575.13 and 356.47 is: 534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.99 : 1,575.13 = 356.47 : x
  2. Step 2: Convert to fraction form
    1,049.99/1,575.13 = 356.47/x
  3. Step 3: Cross multiply
    1,049.99x = 1,575.13 × 356.47
  4. Step 4: Simplify right side
    1,049.99x = 561,488.06
  5. Step 5: Solve for x
    x = 561,488.06/1,049.99
  6. Step 6: Final answer
    x = 534.76

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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.