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Finding the Fourth Proportional to 607.42, 838.46 and 358.75

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Solution

The fourth proportional to 607.42, 838.46 and 358.75 is: 495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.42 : 838.46 = 358.75 : x
  2. Step 2: Convert to fraction form
    607.42/838.46 = 358.75/x
  3. Step 3: Cross multiply
    607.42x = 838.46 × 358.75
  4. Step 4: Simplify right side
    607.42x = 300,797.53
  5. Step 5: Solve for x
    x = 300,797.53/607.42
  6. Step 6: Final answer
    x = 495.21

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Double scale
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1.5x scale

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.