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Finding the Fourth Proportional to 343.15, 474.15 and 270.05

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Solution

The fourth proportional to 343.15, 474.15 and 270.05 is: 373.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.15 : 474.15 = 270.05 : x
  2. Step 2: Convert to fraction form
    343.15/474.15 = 270.05/x
  3. Step 3: Cross multiply
    343.15x = 474.15 × 270.05
  4. Step 4: Simplify right side
    343.15x = 128,044.21
  5. Step 5: Solve for x
    x = 128,044.21/343.15
  6. Step 6: Final answer
    x = 373.14

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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.