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Finding the Fourth Proportional to 425.46, 588.29 and 405.75

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Solution

The fourth proportional to 425.46, 588.29 and 405.75 is: 561.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.46 : 588.29 = 405.75 : x
  2. Step 2: Convert to fraction form
    425.46/588.29 = 405.75/x
  3. Step 3: Cross multiply
    425.46x = 588.29 × 405.75
  4. Step 4: Simplify right side
    425.46x = 238,696.64
  5. Step 5: Solve for x
    x = 238,696.64/425.46
  6. Step 6: Final answer
    x = 561.03

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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.