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Finding the Fourth Proportional to 365.30, 503.48 and 313.46

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Solution

The fourth proportional to 365.30, 503.48 and 313.46 is: 432.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.30 : 503.48 = 313.46 : x
  2. Step 2: Convert to fraction form
    365.30/503.48 = 313.46/x
  3. Step 3: Cross multiply
    365.30x = 503.48 × 313.46
  4. Step 4: Simplify right side
    365.30x = 157,820.84
  5. Step 5: Solve for x
    x = 157,820.84/365.30
  6. Step 6: Final answer
    x = 432.03

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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.