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Finding the Fourth Proportional to 507.64, 757.90 and 476.74

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Solution

The fourth proportional to 507.64, 757.90 and 476.74 is: 711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.64 : 757.90 = 476.74 : x
  2. Step 2: Convert to fraction form
    507.64/757.90 = 476.74/x
  3. Step 3: Cross multiply
    507.64x = 757.90 × 476.74
  4. Step 4: Simplify right side
    507.64x = 361,321.25
  5. Step 5: Solve for x
    x = 361,321.25/507.64
  6. Step 6: Final answer
    x = 711.77

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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.