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Finding the Fourth Proportional to 579.20, 798.47 and 358

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Solution

The fourth proportional to 579.20, 798.47 and 358 is: 493.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.20 : 798.47 = 358 : x
  2. Step 2: Convert to fraction form
    579.20/798.47 = 358/x
  3. Step 3: Cross multiply
    579.20x = 798.47 × 358
  4. Step 4: Simplify right side
    579.20x = 285,852.26
  5. Step 5: Solve for x
    x = 285,852.26/579.20
  6. Step 6: Final answer
    x = 493.53

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