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Finding the Fourth Proportional to 750.93, 1,126.40 and 318.39

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Solution

The fourth proportional to 750.93, 1,126.40 and 318.39 is: 477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.93 : 1,126.40 = 318.39 : x
  2. Step 2: Convert to fraction form
    750.93/1,126.40 = 318.39/x
  3. Step 3: Cross multiply
    750.93x = 1,126.40 × 318.39
  4. Step 4: Simplify right side
    750.93x = 358,632.90
  5. Step 5: Solve for x
    x = 358,632.90/750.93
  6. Step 6: Final answer
    x = 477.59

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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.