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Finding the Fourth Proportional to 626.64, 935.36 and 581.60

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Solution

The fourth proportional to 626.64, 935.36 and 581.60 is: 868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.64 : 935.36 = 581.60 : x
  2. Step 2: Convert to fraction form
    626.64/935.36 = 581.60/x
  3. Step 3: Cross multiply
    626.64x = 935.36 × 581.60
  4. Step 4: Simplify right side
    626.64x = 544,005.38
  5. Step 5: Solve for x
    x = 544,005.38/626.64
  6. Step 6: Final answer
    x = 868.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.