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Finding the Third Proportional to 346.78 and 536.91

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Solution

The third proportional to 346.78 and 536.91 is: 831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.78 : 536.91 = 536.91 : x
  2. Step 2: Convert to fraction form
    346.78/536.91 = 536.91/x
  3. Step 3: Cross multiply
    346.78x = 536.91 × 536.91
  4. Step 4: Simplify right side
    346.78x = 288,268.32
  5. Step 5: Solve for x
    x = 288,268.32/346.78
  6. Step 6: Final answer
    x = 831.27

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.