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Finding the Fourth Proportional to 347.07, 518.57 and 263.13

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Solution

The fourth proportional to 347.07, 518.57 and 263.13 is: 393.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.07 : 518.57 = 263.13 : x
  2. Step 2: Convert to fraction form
    347.07/518.57 = 263.13/x
  3. Step 3: Cross multiply
    347.07x = 518.57 × 263.13
  4. Step 4: Simplify right side
    347.07x = 136,451.32
  5. Step 5: Solve for x
    x = 136,451.32/347.07
  6. Step 6: Final answer
    x = 393.15

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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.