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Finding the Fourth Proportional to 1,157.59, 1,596.51 and 803.57

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Solution

The fourth proportional to 1,157.59, 1,596.51 and 803.57 is: 1,108.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.59 : 1,596.51 = 803.57 : x
  2. Step 2: Convert to fraction form
    1,157.59/1,596.51 = 803.57/x
  3. Step 3: Cross multiply
    1,157.59x = 1,596.51 × 803.57
  4. Step 4: Simplify right side
    1,157.59x = 1,282,908.54
  5. Step 5: Solve for x
    x = 1,282,908.54/1,157.59
  6. Step 6: Final answer
    x = 1,108.26

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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.