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Finding the Fourth Proportional to 346.66, 520.05 and 130.24

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Solution

The fourth proportional to 346.66, 520.05 and 130.24 is: 195.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.66 : 520.05 = 130.24 : x
  2. Step 2: Convert to fraction form
    346.66/520.05 = 130.24/x
  3. Step 3: Cross multiply
    346.66x = 520.05 × 130.24
  4. Step 4: Simplify right side
    346.66x = 67,728.06
  5. Step 5: Solve for x
    x = 67,728.06/346.66
  6. Step 6: Final answer
    x = 195.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.