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Finding the Fourth Proportional to 606.70, 851.30 and 606.70

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Solution

The fourth proportional to 606.70, 851.30 and 606.70 is: 851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.70 : 851.30 = 606.70 : x
  2. Step 2: Convert to fraction form
    606.70/851.30 = 606.70/x
  3. Step 3: Cross multiply
    606.70x = 851.30 × 606.70
  4. Step 4: Simplify right side
    606.70x = 516,483.71
  5. Step 5: Solve for x
    x = 516,483.71/606.70
  6. Step 6: Final answer
    x = 851.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.