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Finding the Fourth Proportional to 504.74, 756.81 and 211.93

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Solution

The fourth proportional to 504.74, 756.81 and 211.93 is: 317.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.74 : 756.81 = 211.93 : x
  2. Step 2: Convert to fraction form
    504.74/756.81 = 211.93/x
  3. Step 3: Cross multiply
    504.74x = 756.81 × 211.93
  4. Step 4: Simplify right side
    504.74x = 160,390.74
  5. Step 5: Solve for x
    x = 160,390.74/504.74
  6. Step 6: Final answer
    x = 317.77

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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.