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Finding the Fourth Proportional to 567.72, 784.04 and 346.82

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Solution

The fourth proportional to 567.72, 784.04 and 346.82 is: 478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.72 : 784.04 = 346.82 : x
  2. Step 2: Convert to fraction form
    567.72/784.04 = 346.82/x
  3. Step 3: Cross multiply
    567.72x = 784.04 × 346.82
  4. Step 4: Simplify right side
    567.72x = 271,915.10
  5. Step 5: Solve for x
    x = 271,915.10/567.72
  6. Step 6: Final answer
    x = 478.96

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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.