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Finding the Fourth Proportional to 615.72, 849.84 and 383.04

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Solution

The fourth proportional to 615.72, 849.84 and 383.04 is: 528.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.72 : 849.84 = 383.04 : x
  2. Step 2: Convert to fraction form
    615.72/849.84 = 383.04/x
  3. Step 3: Cross multiply
    615.72x = 849.84 × 383.04
  4. Step 4: Simplify right side
    615.72x = 325,522.71
  5. Step 5: Solve for x
    x = 325,522.71/615.72
  6. Step 6: Final answer
    x = 528.69

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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.