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Finding the Fourth Proportional to 605.12, 907.70 and 358.20

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Solution

The fourth proportional to 605.12, 907.70 and 358.20 is: 537.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.12 : 907.70 = 358.20 : x
  2. Step 2: Convert to fraction form
    605.12/907.70 = 358.20/x
  3. Step 3: Cross multiply
    605.12x = 907.70 × 358.20
  4. Step 4: Simplify right side
    605.12x = 325,136.35
  5. Step 5: Solve for x
    x = 325,136.35/605.12
  6. Step 6: Final answer
    x = 537.31

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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.