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Finding the Fourth Proportional to 1,017.07, 1,403.45 and 574.88

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Solution

The fourth proportional to 1,017.07, 1,403.45 and 574.88 is: 793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.07 : 1,403.45 = 574.88 : x
  2. Step 2: Convert to fraction form
    1,017.07/1,403.45 = 574.88/x
  3. Step 3: Cross multiply
    1,017.07x = 1,403.45 × 574.88
  4. Step 4: Simplify right side
    1,017.07x = 806,815.34
  5. Step 5: Solve for x
    x = 806,815.34/1,017.07
  6. Step 6: Final answer
    x = 793.27

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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.