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Finding the Fourth Proportional to 1,035, 1,552.54 and 427

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Solution

The fourth proportional to 1,035, 1,552.54 and 427 is: 640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035 : 1,552.54 = 427 : x
  2. Step 2: Convert to fraction form
    1,035/1,552.54 = 427/x
  3. Step 3: Cross multiply
    1,035x = 1,552.54 × 427
  4. Step 4: Simplify right side
    1,035x = 662,934.58
  5. Step 5: Solve for x
    x = 662,934.58/1,035
  6. Step 6: Final answer
    x = 640.52

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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.