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Finding the Fourth Proportional to 1,283.60, 1,925.40 and 625.52

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Solution

The fourth proportional to 1,283.60, 1,925.40 and 625.52 is: 938.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.60 : 1,925.40 = 625.52 : x
  2. Step 2: Convert to fraction form
    1,283.60/1,925.40 = 625.52/x
  3. Step 3: Cross multiply
    1,283.60x = 1,925.40 × 625.52
  4. Step 4: Simplify right side
    1,283.60x = 1,204,376.21
  5. Step 5: Solve for x
    x = 1,204,376.21/1,283.60
  6. Step 6: Final answer
    x = 938.28

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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.