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Finding the Fourth Proportional to 468.84, 646.68 and 358.59

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Solution

The fourth proportional to 468.84, 646.68 and 358.59 is: 494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.84 : 646.68 = 358.59 : x
  2. Step 2: Convert to fraction form
    468.84/646.68 = 358.59/x
  3. Step 3: Cross multiply
    468.84x = 646.68 × 358.59
  4. Step 4: Simplify right side
    468.84x = 231,892.98
  5. Step 5: Solve for x
    x = 231,892.98/468.84
  6. Step 6: Final answer
    x = 494.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.