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Finding the Fourth Proportional to 605.28, 907.59 and 258.51

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Solution

The fourth proportional to 605.28, 907.59 and 258.51 is: 387.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.28 : 907.59 = 258.51 : x
  2. Step 2: Convert to fraction form
    605.28/907.59 = 258.51/x
  3. Step 3: Cross multiply
    605.28x = 907.59 × 258.51
  4. Step 4: Simplify right side
    605.28x = 234,621.09
  5. Step 5: Solve for x
    x = 234,621.09/605.28
  6. Step 6: Final answer
    x = 387.62

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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.