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Finding the Fourth Proportional to 1,157.56, 1,597.45 and 633.61

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Solution

The fourth proportional to 1,157.56, 1,597.45 and 633.61 is: 874.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.56 : 1,597.45 = 633.61 : x
  2. Step 2: Convert to fraction form
    1,157.56/1,597.45 = 633.61/x
  3. Step 3: Cross multiply
    1,157.56x = 1,597.45 × 633.61
  4. Step 4: Simplify right side
    1,157.56x = 1,012,150.72
  5. Step 5: Solve for x
    x = 1,012,150.72/1,157.56
  6. Step 6: Final answer
    x = 874.38

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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.