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Finding the Fourth Proportional to 345.60, 477.05 and 247.41

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Solution

The fourth proportional to 345.60, 477.05 and 247.41 is: 341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.60 : 477.05 = 247.41 : x
  2. Step 2: Convert to fraction form
    345.60/477.05 = 247.41/x
  3. Step 3: Cross multiply
    345.60x = 477.05 × 247.41
  4. Step 4: Simplify right side
    345.60x = 118,025.70
  5. Step 5: Solve for x
    x = 118,025.70/345.60
  6. Step 6: Final answer
    x = 341.51

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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.