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Finding the Fourth Proportional to 557.01, 769.07 and 347.48

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Solution

The fourth proportional to 557.01, 769.07 and 347.48 is: 479.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.01 : 769.07 = 347.48 : x
  2. Step 2: Convert to fraction form
    557.01/769.07 = 347.48/x
  3. Step 3: Cross multiply
    557.01x = 769.07 × 347.48
  4. Step 4: Simplify right side
    557.01x = 267,230.86
  5. Step 5: Solve for x
    x = 267,230.86/557.01
  6. Step 6: Final answer
    x = 479.76

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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.