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Finding the Fourth Proportional to 555.48, 830.94 and 456.87

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Solution

The fourth proportional to 555.48, 830.94 and 456.87 is: 683.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.48 : 830.94 = 456.87 : x
  2. Step 2: Convert to fraction form
    555.48/830.94 = 456.87/x
  3. Step 3: Cross multiply
    555.48x = 830.94 × 456.87
  4. Step 4: Simplify right side
    555.48x = 379,631.56
  5. Step 5: Solve for x
    x = 379,631.56/555.48
  6. Step 6: Final answer
    x = 683.43

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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.