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Finding the Fourth Proportional to 756.29, 1,127.01 and 731.52

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Solution

The fourth proportional to 756.29, 1,127.01 and 731.52 is: 1,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.29 : 1,127.01 = 731.52 : x
  2. Step 2: Convert to fraction form
    756.29/1,127.01 = 731.52/x
  3. Step 3: Cross multiply
    756.29x = 1,127.01 × 731.52
  4. Step 4: Simplify right side
    756.29x = 824,430.36
  5. Step 5: Solve for x
    x = 824,430.36/756.29
  6. Step 6: Final answer
    x = 1,090.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.