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Finding the Fourth Proportional to 607.69, 838.53 and 358.95

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Solution

The fourth proportional to 607.69, 838.53 and 358.95 is: 495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.69 : 838.53 = 358.95 : x
  2. Step 2: Convert to fraction form
    607.69/838.53 = 358.95/x
  3. Step 3: Cross multiply
    607.69x = 838.53 × 358.95
  4. Step 4: Simplify right side
    607.69x = 300,990.34
  5. Step 5: Solve for x
    x = 300,990.34/607.69
  6. Step 6: Final answer
    x = 495.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.