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Finding the Fourth Proportional to 1,153.57, 1,730.96 and 503.54

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Solution

The fourth proportional to 1,153.57, 1,730.96 and 503.54 is: 755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.57 : 1,730.96 = 503.54 : x
  2. Step 2: Convert to fraction form
    1,153.57/1,730.96 = 503.54/x
  3. Step 3: Cross multiply
    1,153.57x = 1,730.96 × 503.54
  4. Step 4: Simplify right side
    1,153.57x = 871,607.60
  5. Step 5: Solve for x
    x = 871,607.60/1,153.57
  6. Step 6: Final answer
    x = 755.57

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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.