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Finding the Fourth Proportional to 505.25, 697.17 and 295.46

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Solution

The fourth proportional to 505.25, 697.17 and 295.46 is: 407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.25 : 697.17 = 295.46 : x
  2. Step 2: Convert to fraction form
    505.25/697.17 = 295.46/x
  3. Step 3: Cross multiply
    505.25x = 697.17 × 295.46
  4. Step 4: Simplify right side
    505.25x = 205,985.85
  5. Step 5: Solve for x
    x = 205,985.85/505.25
  6. Step 6: Final answer
    x = 407.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.