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Finding the Fourth Proportional to 615.84, 850.08 and 528.16

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Solution

The fourth proportional to 615.84, 850.08 and 528.16 is: 729.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.84 : 850.08 = 528.16 : x
  2. Step 2: Convert to fraction form
    615.84/850.08 = 528.16/x
  3. Step 3: Cross multiply
    615.84x = 850.08 × 528.16
  4. Step 4: Simplify right side
    615.84x = 448,978.25
  5. Step 5: Solve for x
    x = 448,978.25/615.84
  6. Step 6: Final answer
    x = 729.05

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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.