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Finding the Fourth Proportional to 373.44, 514.20 and 285

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Solution

The fourth proportional to 373.44, 514.20 and 285 is: 392.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.44 : 514.20 = 285 : x
  2. Step 2: Convert to fraction form
    373.44/514.20 = 285/x
  3. Step 3: Cross multiply
    373.44x = 514.20 × 285
  4. Step 4: Simplify right side
    373.44x = 146,547
  5. Step 5: Solve for x
    x = 146,547/373.44
  6. Step 6: Final answer
    x = 392.42

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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.