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Finding the Fourth Proportional to 607.46, 838.60 and 358.86

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Solution

The fourth proportional to 607.46, 838.60 and 358.86 is: 495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.46 : 838.60 = 358.86 : x
  2. Step 2: Convert to fraction form
    607.46/838.60 = 358.86/x
  3. Step 3: Cross multiply
    607.46x = 838.60 × 358.86
  4. Step 4: Simplify right side
    607.46x = 300,939.10
  5. Step 5: Solve for x
    x = 300,939.10/607.46
  6. Step 6: Final answer
    x = 495.40

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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.