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Finding the Fourth Proportional to 614.11, 921.17 and 505.67

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Solution

The fourth proportional to 614.11, 921.17 and 505.67 is: 758.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.11 : 921.17 = 505.67 : x
  2. Step 2: Convert to fraction form
    614.11/921.17 = 505.67/x
  3. Step 3: Cross multiply
    614.11x = 921.17 × 505.67
  4. Step 4: Simplify right side
    614.11x = 465,809.07
  5. Step 5: Solve for x
    x = 465,809.07/614.11
  6. Step 6: Final answer
    x = 758.51

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.