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Finding the Fourth Proportional to 604.99, 907.60 and 215.00

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Solution

The fourth proportional to 604.99, 907.60 and 215.00 is: 322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.99 : 907.60 = 215.00 : x
  2. Step 2: Convert to fraction form
    604.99/907.60 = 215.00/x
  3. Step 3: Cross multiply
    604.99x = 907.60 × 215.00
  4. Step 4: Simplify right side
    604.99x = 195,137.23
  5. Step 5: Solve for x
    x = 195,137.23/604.99
  6. Step 6: Final answer
    x = 322.55

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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.