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Finding the Fourth Proportional to 791.04, 1,090.76 and 542.48

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Solution

The fourth proportional to 791.04, 1,090.76 and 542.48 is: 748.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.04 : 1,090.76 = 542.48 : x
  2. Step 2: Convert to fraction form
    791.04/1,090.76 = 542.48/x
  3. Step 3: Cross multiply
    791.04x = 1,090.76 × 542.48
  4. Step 4: Simplify right side
    791.04x = 591,715.48
  5. Step 5: Solve for x
    x = 591,715.48/791.04
  6. Step 6: Final answer
    x = 748.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.