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Finding the Fourth Proportional to 907.89, 1,358.73 and 630.33

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Solution

The fourth proportional to 907.89, 1,358.73 and 630.33 is: 943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.89 : 1,358.73 = 630.33 : x
  2. Step 2: Convert to fraction form
    907.89/1,358.73 = 630.33/x
  3. Step 3: Cross multiply
    907.89x = 1,358.73 × 630.33
  4. Step 4: Simplify right side
    907.89x = 856,448.28
  5. Step 5: Solve for x
    x = 856,448.28/907.89
  6. Step 6: Final answer
    x = 943.34

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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.