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Finding the Fourth Proportional to 373.76, 514.60 and 308.16

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Solution

The fourth proportional to 373.76, 514.60 and 308.16 is: 424.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.76 : 514.60 = 308.16 : x
  2. Step 2: Convert to fraction form
    373.76/514.60 = 308.16/x
  3. Step 3: Cross multiply
    373.76x = 514.60 × 308.16
  4. Step 4: Simplify right side
    373.76x = 158,579.14
  5. Step 5: Solve for x
    x = 158,579.14/373.76
  6. Step 6: Final answer
    x = 424.28

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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.