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Finding the Fourth Proportional to 579.28, 868.74 and 348.16

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Solution

The fourth proportional to 579.28, 868.74 and 348.16 is: 522.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.28 : 868.74 = 348.16 : x
  2. Step 2: Convert to fraction form
    579.28/868.74 = 348.16/x
  3. Step 3: Cross multiply
    579.28x = 868.74 × 348.16
  4. Step 4: Simplify right side
    579.28x = 302,460.52
  5. Step 5: Solve for x
    x = 302,460.52/579.28
  6. Step 6: Final answer
    x = 522.13

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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.