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Finding the Fourth Proportional to 387.10, 579.50 and 373.26

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Solution

The fourth proportional to 387.10, 579.50 and 373.26 is: 558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.10 : 579.50 = 373.26 : x
  2. Step 2: Convert to fraction form
    387.10/579.50 = 373.26/x
  3. Step 3: Cross multiply
    387.10x = 579.50 × 373.26
  4. Step 4: Simplify right side
    387.10x = 216,304.19
  5. Step 5: Solve for x
    x = 216,304.19/387.10
  6. Step 6: Final answer
    x = 558.78

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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.