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Finding the Fourth Proportional to 631.70, 942.30 and 621.62

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Solution

The fourth proportional to 631.70, 942.30 and 621.62 is: 927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.70 : 942.30 = 621.62 : x
  2. Step 2: Convert to fraction form
    631.70/942.30 = 621.62/x
  3. Step 3: Cross multiply
    631.70x = 942.30 × 621.62
  4. Step 4: Simplify right side
    631.70x = 585,749.42
  5. Step 5: Solve for x
    x = 585,749.42/631.70
  6. Step 6: Final answer
    x = 927.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.