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Finding the Fourth Proportional to 379.02, 565.28 and 347.58

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Solution

The fourth proportional to 379.02, 565.28 and 347.58 is: 518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.02 : 565.28 = 347.58 : x
  2. Step 2: Convert to fraction form
    379.02/565.28 = 347.58/x
  3. Step 3: Cross multiply
    379.02x = 565.28 × 347.58
  4. Step 4: Simplify right side
    379.02x = 196,480.02
  5. Step 5: Solve for x
    x = 196,480.02/379.02
  6. Step 6: Final answer
    x = 518.39

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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.