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Finding the Fourth Proportional to 979.62, 1,468.50 and 363.17

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Solution

The fourth proportional to 979.62, 1,468.50 and 363.17 is: 544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.62 : 1,468.50 = 363.17 : x
  2. Step 2: Convert to fraction form
    979.62/1,468.50 = 363.17/x
  3. Step 3: Cross multiply
    979.62x = 1,468.50 × 363.17
  4. Step 4: Simplify right side
    979.62x = 533,307.80
  5. Step 5: Solve for x
    x = 533,307.80/979.62
  6. Step 6: Final answer
    x = 544.40

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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.