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Finding the Fourth Proportional to 452.94, 678.98 and 236.40

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Solution

The fourth proportional to 452.94, 678.98 and 236.40 is: 354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.94 : 678.98 = 236.40 : x
  2. Step 2: Convert to fraction form
    452.94/678.98 = 236.40/x
  3. Step 3: Cross multiply
    452.94x = 678.98 × 236.40
  4. Step 4: Simplify right side
    452.94x = 160,510.87
  5. Step 5: Solve for x
    x = 160,510.87/452.94
  6. Step 6: Final answer
    x = 354.38

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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.