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Finding the Fourth Proportional to 344.84, 517.51 and 215.03

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Solution

The fourth proportional to 344.84, 517.51 and 215.03 is: 322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.84 : 517.51 = 215.03 : x
  2. Step 2: Convert to fraction form
    344.84/517.51 = 215.03/x
  3. Step 3: Cross multiply
    344.84x = 517.51 × 215.03
  4. Step 4: Simplify right side
    344.84x = 111,280.18
  5. Step 5: Solve for x
    x = 111,280.18/344.84
  6. Step 6: Final answer
    x = 322.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.