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Finding the Fourth Proportional to 605.04, 907.60 and 215.07

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Solution

The fourth proportional to 605.04, 907.60 and 215.07 is: 322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.04 : 907.60 = 215.07 : x
  2. Step 2: Convert to fraction form
    605.04/907.60 = 215.07/x
  3. Step 3: Cross multiply
    605.04x = 907.60 × 215.07
  4. Step 4: Simplify right side
    605.04x = 195,197.53
  5. Step 5: Solve for x
    x = 195,197.53/605.04
  6. Step 6: Final answer
    x = 322.62

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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.