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Finding the Fourth Proportional to 346.68, 517.48 and 305.67

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Solution

The fourth proportional to 346.68, 517.48 and 305.67 is: 456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.68 : 517.48 = 305.67 : x
  2. Step 2: Convert to fraction form
    346.68/517.48 = 305.67/x
  3. Step 3: Cross multiply
    346.68x = 517.48 × 305.67
  4. Step 4: Simplify right side
    346.68x = 158,178.11
  5. Step 5: Solve for x
    x = 158,178.11/346.68
  6. Step 6: Final answer
    x = 456.27

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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.