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Finding the Fourth Proportional to 750.96, 1,127.16 and 340.56

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Solution

The fourth proportional to 750.96, 1,127.16 and 340.56 is: 511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.96 : 1,127.16 = 340.56 : x
  2. Step 2: Convert to fraction form
    750.96/1,127.16 = 340.56/x
  3. Step 3: Cross multiply
    750.96x = 1,127.16 × 340.56
  4. Step 4: Simplify right side
    750.96x = 383,865.61
  5. Step 5: Solve for x
    x = 383,865.61/750.96
  6. Step 6: Final answer
    x = 511.17

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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.