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Finding the Fourth Proportional to 505.58, 757.40 and 262.35

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Solution

The fourth proportional to 505.58, 757.40 and 262.35 is: 393.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.58 : 757.40 = 262.35 : x
  2. Step 2: Convert to fraction form
    505.58/757.40 = 262.35/x
  3. Step 3: Cross multiply
    505.58x = 757.40 × 262.35
  4. Step 4: Simplify right side
    505.58x = 198,702.58
  5. Step 5: Solve for x
    x = 198,702.58/505.58
  6. Step 6: Final answer
    x = 393.02

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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.