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Finding the Fourth Proportional to 750.80, 1,126.07 and 202.91

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Solution

The fourth proportional to 750.80, 1,126.07 and 202.91 is: 304.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.80 : 1,126.07 = 202.91 : x
  2. Step 2: Convert to fraction form
    750.80/1,126.07 = 202.91/x
  3. Step 3: Cross multiply
    750.80x = 1,126.07 × 202.91
  4. Step 4: Simplify right side
    750.80x = 228,490.86
  5. Step 5: Solve for x
    x = 228,490.86/750.80
  6. Step 6: Final answer
    x = 304.33

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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.