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Finding the Fourth Proportional to 1,045.63, 1,442.99 and 573.54

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Solution

The fourth proportional to 1,045.63, 1,442.99 and 573.54 is: 791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.63 : 1,442.99 = 573.54 : x
  2. Step 2: Convert to fraction form
    1,045.63/1,442.99 = 573.54/x
  3. Step 3: Cross multiply
    1,045.63x = 1,442.99 × 573.54
  4. Step 4: Simplify right side
    1,045.63x = 827,612.48
  5. Step 5: Solve for x
    x = 827,612.48/1,045.63
  6. Step 6: Final answer
    x = 791.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.