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Finding the Fourth Proportional to 653.11, 980.05 and 242.53

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Solution

The fourth proportional to 653.11, 980.05 and 242.53 is: 363.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.11 : 980.05 = 242.53 : x
  2. Step 2: Convert to fraction form
    653.11/980.05 = 242.53/x
  3. Step 3: Cross multiply
    653.11x = 980.05 × 242.53
  4. Step 4: Simplify right side
    653.11x = 237,690.31
  5. Step 5: Solve for x
    x = 237,690.31/653.11
  6. Step 6: Final answer
    x = 363.94

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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.