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Finding the Fourth Proportional to 435.66, 601.31 and 278.25

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Solution

The fourth proportional to 435.66, 601.31 and 278.25 is: 384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.66 : 601.31 = 278.25 : x
  2. Step 2: Convert to fraction form
    435.66/601.31 = 278.25/x
  3. Step 3: Cross multiply
    435.66x = 601.31 × 278.25
  4. Step 4: Simplify right side
    435.66x = 167,313.12
  5. Step 5: Solve for x
    x = 167,313.12/435.66
  6. Step 6: Final answer
    x = 384.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.