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Finding the Fourth Proportional to 539.36, 807.37 and 435.78

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Solution

The fourth proportional to 539.36, 807.37 and 435.78 is: 652.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.36 : 807.37 = 435.78 : x
  2. Step 2: Convert to fraction form
    539.36/807.37 = 435.78/x
  3. Step 3: Cross multiply
    539.36x = 807.37 × 435.78
  4. Step 4: Simplify right side
    539.36x = 351,834.61
  5. Step 5: Solve for x
    x = 351,834.61/539.36
  6. Step 6: Final answer
    x = 652.32

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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.