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Finding the Fourth Proportional to 436.16, 650.56 and 387.52

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Solution

The fourth proportional to 436.16, 650.56 and 387.52 is: 578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.16 : 650.56 = 387.52 : x
  2. Step 2: Convert to fraction form
    436.16/650.56 = 387.52/x
  3. Step 3: Cross multiply
    436.16x = 650.56 × 387.52
  4. Step 4: Simplify right side
    436.16x = 252,105.01
  5. Step 5: Solve for x
    x = 252,105.01/436.16
  6. Step 6: Final answer
    x = 578.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.