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Finding the Fourth Proportional to 365.72, 504.54 and 346.28

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Solution

The fourth proportional to 365.72, 504.54 and 346.28 is: 477.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.72 : 504.54 = 346.28 : x
  2. Step 2: Convert to fraction form
    365.72/504.54 = 346.28/x
  3. Step 3: Cross multiply
    365.72x = 504.54 × 346.28
  4. Step 4: Simplify right side
    365.72x = 174,712.11
  5. Step 5: Solve for x
    x = 174,712.11/365.72
  6. Step 6: Final answer
    x = 477.72

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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.