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Finding the Fourth Proportional to 458.29, 686.82 and 400.36

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Solution

The fourth proportional to 458.29, 686.82 and 400.36 is: 600.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.29 : 686.82 = 400.36 : x
  2. Step 2: Convert to fraction form
    458.29/686.82 = 400.36/x
  3. Step 3: Cross multiply
    458.29x = 686.82 × 400.36
  4. Step 4: Simplify right side
    458.29x = 274,975.26
  5. Step 5: Solve for x
    x = 274,975.26/458.29
  6. Step 6: Final answer
    x = 600.00

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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.