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Finding the Fourth Proportional to 579.05, 798.68 and 358.10

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Solution

The fourth proportional to 579.05, 798.68 and 358.10 is: 493.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.05 : 798.68 = 358.10 : x
  2. Step 2: Convert to fraction form
    579.05/798.68 = 358.10/x
  3. Step 3: Cross multiply
    579.05x = 798.68 × 358.10
  4. Step 4: Simplify right side
    579.05x = 286,009.68
  5. Step 5: Solve for x
    x = 286,009.68/579.05
  6. Step 6: Final answer
    x = 493.93

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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.