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Finding the Fourth Proportional to 567.40, 849.30 and 306.75

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Solution

The fourth proportional to 567.40, 849.30 and 306.75 is: 459.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.40 : 849.30 = 306.75 : x
  2. Step 2: Convert to fraction form
    567.40/849.30 = 306.75/x
  3. Step 3: Cross multiply
    567.40x = 849.30 × 306.75
  4. Step 4: Simplify right side
    567.40x = 260,522.78
  5. Step 5: Solve for x
    x = 260,522.78/567.40
  6. Step 6: Final answer
    x = 459.15

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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.