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Finding the Fourth Proportional to 387.23, 579.24 and 354.48

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Solution

The fourth proportional to 387.23, 579.24 and 354.48 is: 530.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.23 : 579.24 = 354.48 : x
  2. Step 2: Convert to fraction form
    387.23/579.24 = 354.48/x
  3. Step 3: Cross multiply
    387.23x = 579.24 × 354.48
  4. Step 4: Simplify right side
    387.23x = 205,329.00
  5. Step 5: Solve for x
    x = 205,329.00/387.23
  6. Step 6: Final answer
    x = 530.26

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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.