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Finding the Fourth Proportional to 373.21, 514.95 and 242.39

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Solution

The fourth proportional to 373.21, 514.95 and 242.39 is: 334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.21 : 514.95 = 242.39 : x
  2. Step 2: Convert to fraction form
    373.21/514.95 = 242.39/x
  3. Step 3: Cross multiply
    373.21x = 514.95 × 242.39
  4. Step 4: Simplify right side
    373.21x = 124,818.73
  5. Step 5: Solve for x
    x = 124,818.73/373.21
  6. Step 6: Final answer
    x = 334.45

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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.