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Finding the Fourth Proportional to 642.05, 963.14 and 368.07

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Solution

The fourth proportional to 642.05, 963.14 and 368.07 is: 552.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.05 : 963.14 = 368.07 : x
  2. Step 2: Convert to fraction form
    642.05/963.14 = 368.07/x
  3. Step 3: Cross multiply
    642.05x = 963.14 × 368.07
  4. Step 4: Simplify right side
    642.05x = 354,502.94
  5. Step 5: Solve for x
    x = 354,502.94/642.05
  6. Step 6: Final answer
    x = 552.14

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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.