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Finding the Fourth Proportional to 505.01, 695.46 and 454.79

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Solution

The fourth proportional to 505.01, 695.46 and 454.79 is: 626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.01 : 695.46 = 454.79 : x
  2. Step 2: Convert to fraction form
    505.01/695.46 = 454.79/x
  3. Step 3: Cross multiply
    505.01x = 695.46 × 454.79
  4. Step 4: Simplify right side
    505.01x = 316,289.99
  5. Step 5: Solve for x
    x = 316,289.99/505.01
  6. Step 6: Final answer
    x = 626.30

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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.