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Finding the Fourth Proportional to 604.89, 907.07 and 258.21

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Solution

The fourth proportional to 604.89, 907.07 and 258.21 is: 387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.89 : 907.07 = 258.21 : x
  2. Step 2: Convert to fraction form
    604.89/907.07 = 258.21/x
  3. Step 3: Cross multiply
    604.89x = 907.07 × 258.21
  4. Step 4: Simplify right side
    604.89x = 234,214.54
  5. Step 5: Solve for x
    x = 234,214.54/604.89
  6. Step 6: Final answer
    x = 387.20

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1.5x scale

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.