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Finding the Fourth Proportional to 630.67, 950.70 and 621.22

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Solution

The fourth proportional to 630.67, 950.70 and 621.22 is: 936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.67 : 950.70 = 621.22 : x
  2. Step 2: Convert to fraction form
    630.67/950.70 = 621.22/x
  3. Step 3: Cross multiply
    630.67x = 950.70 × 621.22
  4. Step 4: Simplify right side
    630.67x = 590,593.85
  5. Step 5: Solve for x
    x = 590,593.85/630.67
  6. Step 6: Final answer
    x = 936.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.