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Finding the Fourth Proportional to 347.79, 518.63 and 295.55

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Solution

The fourth proportional to 347.79, 518.63 and 295.55 is: 440.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.79 : 518.63 = 295.55 : x
  2. Step 2: Convert to fraction form
    347.79/518.63 = 295.55/x
  3. Step 3: Cross multiply
    347.79x = 518.63 × 295.55
  4. Step 4: Simplify right side
    347.79x = 153,281.10
  5. Step 5: Solve for x
    x = 153,281.10/347.79
  6. Step 6: Final answer
    x = 440.73

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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.