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Finding the Fourth Proportional to 1,025.35, 1,415.14 and 652.55

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Solution

The fourth proportional to 1,025.35, 1,415.14 and 652.55 is: 900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.35 : 1,415.14 = 652.55 : x
  2. Step 2: Convert to fraction form
    1,025.35/1,415.14 = 652.55/x
  3. Step 3: Cross multiply
    1,025.35x = 1,415.14 × 652.55
  4. Step 4: Simplify right side
    1,025.35x = 923,440.90
  5. Step 5: Solve for x
    x = 923,440.90/1,025.35
  6. Step 6: Final answer
    x = 900.61

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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.